A321374 Expansion of Product_{1 < i <= j <= k} (1 + x^(i*j*k)).

1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 2, 0, 0, 0, 3, 0, 1, 1, 3, 0, 2, 0, 5, 0, 1, 1, 8, 0, 3, 1, 8, 0, 5, 1, 12, 2, 4, 2, 18, 0, 9, 3, 18, 2, 14, 3, 28, 3, 13, 5, 39, 2, 22, 10, 42, 5, 32, 8, 61, 8, 34, 14, 85, 7, 52, 22, 91, 14, 74, 20, 132, 24, 80

Offset: 0

Author

Seiichi Manyama, Nov 08 2018

Keywords

• nonn

Links

• Seiichi Manyama, Table of n, a(n) for n = 0..10000

Crossrefs

Cf. A122179, A211857, A321359.

Formula

G.f.: Product_{k>0} (1 + x^k)^A122179(k).