A321448 - OEIS

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A321448

Expansion of Product_{0 < i < j < k} 1/(1 - x^(i^2 + j^2 + k^2)).

1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 1, 1, 1, 0, 0, 0, 0, 2, 0, 0, 1, 0, 1, 1, 3, 1, 1, 1, 1, 1, 0, 3, 2, 1, 2, 1, 2, 2, 6, 1, 2, 4, 2, 3, 3, 5, 4, 3, 4, 4, 5, 4, 10, 6, 5, 6, 6, 8, 8, 11, 7, 8, 11, 8, 11, 12, 18, 12, 12, 14, 16

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OFFSET

0,36

LINKS

Table of n, a(n) for n=0..88.

FORMULA

G.f.: Product_{k>0} 1/(1 - x^k)^A025442(k).

CROSSREFS

Cf. A025442, A320332, A321445, A321447.

Sequence in context: A363622 A287066 A324816 * A334158 A116357 A035168

Adjacent sequences: A321445 A321446 A321447 * A321449 A321450 A321451

KEYWORD

nonn

AUTHOR

Seiichi Manyama, Nov 09 2018

STATUS

approved