73620

Appears in sequences

• a(n) = sigma_3(n) - sigma_1(n).at n=39A092348
• Number of planar n X n X n binary triangular grids with no more than 3 ones in any similarly oriented 5 X 5 X 5 subtriangle.at n=7A153565
• Number of unordered pairs of edge-disjoint trees on n labeled vertices.at n=5A291953
• Expansion of e.g.f. (1 + x)^(3/(1 - 3 * log(1+x))).at n=5A354289