In number theory, an octahedral number is a figurate number that represents the number of spheres in an octahedron formed from close-packed spheres. The...

A centered octahedral number or Haüy octahedral number is a figurate number that counts the points of a three-dimensional integer lattice that lie inside...

edgelength 24 1155 = number of edges in the join of two cycle graphs, both of order 33 1156 = 342, octahedral number, centered pentagonal number, centered hendecagonal...

pyramidal number. 10425 = octahedral number. 10430 = weird number. 10433 = palindromic prime in base 44 (5H544). 10440 = 144th triangular number. 10499 =...

72 × 17, octagonal number (sequence A000567 in the OEIS), a centered octahedral number 834 = 2 × 3 × 139, cake number, sphenic number, sum of six consecutive...

number of partially ordered set with 7 unlabeled elements 2047 – super-Poulet number, Woodall number, decagonal number, a centered octahedral number,...

the cube, and they have the same three-dimensional symmetry groups, the octahedral symmetry O h {\displaystyle \mathrm {O} _{\mathrm {h} }} . The surface...

43, octahedral number, noncototient, totient sum of the first 33 integers, refactorable number. 345 = 3 × 5 × 23, sphenic number, idoneal number 346 =...

hexagonal number, octahedral number, centered octahedral number, the number of integer partitions of 16, Mertens function returns 0, and is the number of cubic...

has 3! = 6 elements. Six is a triangular number and so is its square (36). It is the first octahedral number, preceding 19. A six-sided polygon is a hexagon...