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...

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

is the natural number following 34 and preceding 36. 35 is the sum of the first five triangular numbers, making it a tetrahedral number. 35 is the 10th...

super-prime 5456 – tetrahedral number 5459 – highly cototient number 5460 – triangular number 5461 – super-Poulet number, centered heptagonal number 5476 = 742...

tetrahedral numbers, and are one-fourth of a larger tetrahedral number. The sum of two consecutive square pyramidal numbers is an octahedral number....

with 54 cuts 1540 = triangular number, hexagonal number, decagonal number, tetrahedral number 1541 = octagonal number 1542 = k such that 2^k starts with...

Pythagorean triple (20, 21, 29). It is the third tetrahedral number. In combinatorics, 20 is the number of distinct combinations of 6 items taken 3 at a...

octahedral number. 13244 = tetrahedral number. 13267 = cuban prime. 13331 = palindromic prime. 13370 = weird number. 13510 = weird number. 13581 = Padovan...

5, 12, 22, 35, ... 5 is a centered tetrahedral number: 1, 5, 15, 35, 69, ... Every centered tetrahedral number with an index of 2, 3 or 4 modulo 5 is...

non-zero tetrahedral number. 366 = 2 × 3 × 61 , {\displaystyle 366=2\times 3\times 61,} sphenic number, Mertens function returns 0, noncototient, number of...