A321437 Expansion of Product_{1 <= i <= j} 1/(1 - x^(i^2 + j^2)).

1, 0, 1, 0, 1, 1, 1, 1, 2, 1, 4, 1, 4, 3, 4, 5, 5, 6, 9, 6, 13, 8, 14, 13, 15, 19, 21, 21, 29, 24, 38, 32, 42, 44, 51, 56, 65, 65, 83, 79, 102, 99, 120, 125, 144, 154, 176, 183, 213, 219, 262, 266, 311, 322, 369, 392, 437, 465, 526, 550, 635, 650, 747, 781, 871, 937

Offset

0,9

Links

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

Formula

G.f.: Product_{k>0} 1/(1 - x^k)^A025426(k).

Crossrefs

Convolution inverse of A321436.

Cf. A025426, A321431, A321435.

Sequence in context: A160598 A107457 A112350 * A319711 A319713 A063717

Adjacent sequences: A321434 A321435 A321436 * A321438 A321439 A321440

Keyword

nonn

Author

Seiichi Manyama, Nov 09 2018

Status

approved