OFFSET
1,2
LINKS
Eric Weisstein's World of Mathematics, Partition Function P, Partition Function Q
EXAMPLE
a(5) = 18 because we have [15, 3], [15, 2, 1], [11, 7], [11, 5, 2] and [7, 5, 3, 2, 1].
CROSSREFS
KEYWORD
sign
AUTHOR
Ilya Gutkovskiy, Jan 25 2023
STATUS
approved