804649

Appears in sequences

• a(n) = Sum{j_1 + ... + j_n = n} Sum_{k=1..n} k*C(n-1,k-1), where the outer sum is over all partitions of n.at n=15A084362
• 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, -1), (1, 0, -1), (1, 0, 0), (1, 0, 1)}.at n=11A150061
• Number of planar strictly 2-connected graphs on n edges.at n=16A289471