OFFSET
1,2
COMMENTS
Inverse weigh transform of A000293.
LINKS
N. J. A. Sloane, Transforms
Eric Weisstein's World of Mathematics, Solid Partition
FORMULA
Product_{n>=1} (1 + x^n)^a(n) = Sum_{k>=0} A000293(k)*x^k.
EXAMPLE
(1 + x) * (1 + x^2)^4 * (1 + x^3)^6 * (1 + x^4)^14 * (1 + x^5)^15 * ... * (1 + x^n)^a(n) * ... = 1 + x + 4*x^2 + 10*x^3 + 26*x^4 + 59*x^5 + ... + A000293(k)*x^k + ...
CROSSREFS
KEYWORD
sign
AUTHOR
Ilya Gutkovskiy, Jun 11 2018
STATUS
approved