139008

Appears in sequences

• Number of asymmetric (identity) trees with n nodes and 6 leaves.at n=14A055337
• 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, 0), (-1, 1, 0), (-1, 1, 1), (1, 0, 0), (1, 0, 1)}.at n=9A150669
• Triangle, read by rows, that transforms diagonals in the table of coefficients of successive iterations of x*(1+x)^2 (cf. A166888).at n=22A166890
• Column 2 of triangle A166890.at n=5A166892
• p-INVERT of (1,1,1,1,1,...), where p(S) = (1 - 2 S^2)^2.at n=12A291024
• a(n) is the number of distinct volumes > 0 of tetrahedra with edges of integer length whose largest is n.at n=23A371345