A320686 Inverse Euler transform of A004010.

0, 756, 4032, -265734, -2987712, 120604680, 2176735680, -58263976134, -1563340453248, 27722120100948, 1105815958027200, -12029301541618956, -769283790627284352, 3952625120472002580, 525306588856752370752, 41570815360527775098, -351118365555207656907648

Offset

1,2

Comments

a(n) is a multiple of 6.

Links

Seiichi Manyama, Table of n, a(n) for n = 1..695

N. J. A. Sloane, Transforms

Eric Weisstein's World of Mathematics, Coxeter-Todd Lattice

Example

1 + 756*q^2 + 4032*q^3 + 20412*q^4 + ... = (1-q^2)^(-756) * (1-q^3)^(-4032) * (1-q^4)^265734 * ... .

Crossrefs

Cf. A004010, A107658.

Sequence in context: A202198 A158657 A004010 * A339797 A288779 A018898

Adjacent sequences: A320683 A320684 A320685 * A320687 A320688 A320689

Keyword

sign

Author

Seiichi Manyama, Oct 19 2018

Status

approved