In mathematics, a centered tetrahedral number is a centered figurate number that represents a tetrahedron. That is, it counts the dots in a three-dimensional...

A tetrahedral number, or triangular pyramidal number, is a figurate number that represents a pyramid with a triangular base and three sides, called a tetrahedron...

first number to be polygonal in 3 ways: it is the 5th triangular number, a hexagonal number, and pentadecagonal number. a centered tetrahedral number. the...

35 is a centered cube number, a centered tetrahedral number, a pentagonal number, and a pentatope number. 35 is a highly cototient number, since there...

strobogrammatic number because it looks the same when viewed both right-side and upside down. 69 is a centered tetrahedral number, a figurate number that represents...

sphenic number, nontotient, a Harshad number in bases 2, 7, 14 and 16, an aspiring number, the aliquot sum of 1574. 791 = 7 × 113, centered tetrahedral number...

function returns 0, refactorable number, self number 425 = 52 × 17, pentagonal number, centered tetrahedral number, sum of three consecutive primes (137...

number which is D(D(x)) 1325 = Markov number, centered tetrahedral number 1326 = 51st triangular number, hexagonal number, Mertens function zero 1327 = first...

nonagonal number. a centered cube number. palindromic in base 18 (1D118). the model number of U-559. 560 = 24 × 5 × 7. It is: a tetrahedral number. a refactorable...

respectively). It is also a star number, a centered tetrahedral number, and a centered octagonal number. In decimal, it is a Smith number since its digits add up...

the smallest number expressed as a sum of distinct squares in 16 different ways (sequence A097563 in the OEIS) a centered tetrahedral number in the middle...

natural number following 294 and preceding 296. 295 is an odd composite number with two prime factors. 295 is a centered tetrahedral number meaning that...

nth centered k-gonal number can be obtained by placing k copies of the (n−1)th triangular number around a central point; therefore, the nth centered k-gonal...

combinatorics, a centered hexagonal number, or centered hexagon number, is a centered figurate number that represents a hexagon with a dot in the center and all...

A centered nonagonal number, (or centered enneagonal number), is a centered figurate number that represents a nonagon with a dot in the center and all...

quadratae secundae". The number of cubes in an octahedron formed by stacking centered squares is a centered octahedral number, the sum of two consecutive...

A centered (or centred) triangular number is a centered figurate number that represents an equilateral triangle with a dot in the center and all its other...

elementary number theory, a centered square number is a centered figurate number that gives the number of dots in a square with a dot in the center and all...

centered decagonal number is a centered figurate number that represents a decagon with a dot in the center and all other dots surrounding the center dot...

In a tetrahedral molecular geometry, a central atom is located at the center with four substituents that are located at the corners of a tetrahedron....

is the number of points in a body-centered cubic pattern within a cube that has n + 1 points along each of its edges. The first few centered cube numbers...

mathematicians already considered triangular numbers, polygonal numbers, tetrahedral numbers, and pyramidal numbers, and subsequent mathematicians have included...

centered octagonal number is a centered figurate number that represents an octagon with a dot in the center and all other dots surrounding the center...

A centered heptagonal number is a centered figurate number that represents a heptagon with a dot in the center and all other dots surrounding the center...

In mathematics, a centered octahedral number or Haüy octahedral number is a figurate number that counts the points of a three-dimensional integer lattice...

Pentachoron – 4-dimensional analogue Synergetics (Fuller) Tetrahedral kite Tetrahedral number Tetrahedroid Tetrahedron packing Triangular dipyramid – constructed...

4481 – Sophie Germain prime 4489 = 672, centered octagonal number 4495 – tetrahedral number 4503 – largest number not the sum of four or fewer squares of...

In mathematics, a centered pentagonal number is a centered figurate number that represents a pentagon with a dot in the center and all other dots surrounding...

with digit sum equal to 7, sum of squares of digits equals 17 2024 – tetrahedral number 2025 = 452, square of the sum of the first nine positive integers...

truncated triangular pyramid number is found by removing (truncating) some smaller tetrahedral number (or triangular pyramidal number) from each of the vertices...