OFFSET
0,2
LINKS
Robert Price, Table of n, a(n) for n = 0..2000 (First 2000 rows)
FORMULA
a(n) = n*A000070(n).
G.f.: x*f'(x), where f(x) = (1/(1 - x))*Product_{k>=1} 1/(1 - x^k). - Ilya Gutkovskiy, Apr 13 2017
MATHEMATICA
Total /@ Table[n*PartitionsP[n-k], {n, 0, 30}, {k, 0, n}] (* Robert Price, Jun 23 2020 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Omar E. Pol, Nov 28 2010
STATUS
approved