OFFSET
0,2
LINKS
G. C. Greubel, Table of n, a(n) for n = 0..1000
FORMULA
a(n) ~ exp(2*Pi*sqrt(2*n/3))/(48*n^2) * (1 + (11*Pi/(12*sqrt(6)) - sqrt(6)/Pi)/sqrt(n) + (3/(2*Pi^2) - 11/6 + 121*Pi^2/1728)/n). - Vaclav Kotesovec, Nov 04 2016
EXAMPLE
a(3)=15 because partitions(3)*partitions(4) = 3*5 = 15.
MAPLE
with(combinat): seq(numbpart(k)*numbpart(k+1), k=0..32) ; # Zerinvary Lajos, Jun 06 2007
MATHEMATICA
Table[PartitionsP[n + 1]*PartitionsP[n], {n, 0, 36}]
PROG
(PARI) a(n)=numbpart(n)*numbpart(n+1) \\ Charles R Greathouse IV, Sep 02 2009
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Wouter Meeussen, Feb 28 2004
STATUS
approved