21650

Appears in sequences

• Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite NES = NU-87 H4[Al4Si64O136].nH2O starting with a T7 atom.at n=13A019208
• Coordination sequence for root lattice B_3.at n=33A022145
• Numbers having four 2's in base 8.at n=32A043432
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, 0, 1), (-1, 1, 1), (0, -1, 1), (1, 0, 1), (1, 1, -1)}.at n=8A149485
• Number of triangular regions into which a figure made up of a row of n adjacent congruent rectangles is divided upon drawing diagonals of all possible rectangles.at n=21A324042
• a(n) is the number of edges formed by n-secting the angles of a decagon.at n=22A335802
• Number of even-length compositions of n with alternating parts distinct.at n=20A342532
• Numbers m such that d(1)^1 + d(2)^2 + ... + d(p)^k = d(1)! + d(2)! + ... + d(k)!, where d(i), i=1..k, are the digits of m.at n=33A342945