556591

Appears in sequences

• 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, -1, -1), (-1, -1, 1), (-1, 0, 1), (-1, 1, -1), (1, 0, 0)}.at n=15A148008
• Triangle read by rows: T(n, k) is the number of chains of length k in the poset of permutations of an n-set.at n=32A375835