321788

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, 0), (1, 0, 0)}.at n=13A148510
• Irregular triangle read by rows: T(n,k) (n >= 2) is the number of cubic graphs on 2n nodes with diameter k.at n=63A204329
• G.f.: A(x) = exp( Sum_{n>=1} A((-1)^n*x)^n * x^n/n ).at n=22A229116