A321361 Expansion of Product_{1 <= i <= j <= k} (1 - x^(i*j*k)).

1, -1, -1, 0, -1, 2, 0, 2, -1, 0, 3, -1, -2, -1, 1, -6, 0, -1, -1, 0, 6, 1, 1, 0, 4, 0, 0, 10, -2, -1, -9, 7, -11, 13, -15, -7, -3, -9, 0, 6, -3, -9, 14, -9, 20, -17, 20, -2, 20, 1, 25, -9, 14, 13, -3, -7, -21, -9, -11, 6, -54, 39, -22, -30, -10, 35, -21, 8, -41, -23

Offset: 0

Author

Seiichi Manyama, Nov 07 2018

Keywords

• sign

Links

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

Crossrefs

Convolution inverse of A321360.

Cf. A034836, A319359, A321299, A321359.

Formula

G.f.: Product_{k>0} (1 - x^k)^A034836(k).