21063

Appears in sequences

• Number of trees by stability index.at n=19A003428
• Number of 6's in all partitions of n.at n=40A024790
• 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, 0), (0, 0, -1), (1, 0, -1), (1, 1, 1)}.at n=8A149683
• G.f. satisfies A(x) = 1 + x*A(x) + x^3*A(x)^5.at n=11A364539
• Expansion of (1/x) * Series_Reversion( x*(1-x)^4/(1-x-x^2) ).at n=6A366083
• Expansion of e.g.f. (1 + x * exp(x))^3.at n=7A377582