93051

Appears in sequences

• Coefficient of X^2 in expansion of (1 + n*X + n*X^2)^n.at n=20A092365
• 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, 0, 1), (0, 1, 0), (1, 0, 0), (1, 1, 1)}.at n=8A151171
• G.f.: A(q) = exp( Sum_{n>=1} A162552(n) * 3*A038500(n) * q^n/n ).at n=40A161808