OFFSET
0,2
LINKS
Alois P. Heinz, Table of n, a(n) for n = 0..19
Henry Bottomley, Partition calculators using java applets
FORMULA
a(n) ~ exp(Pi*sqrt(2^(n+1)/3))/(sqrt(3)*2^(n+2)). - Ilya Gutkovskiy, Jan 13 2017
EXAMPLE
a(2)=5 since there are 5 partitions of 2^2=4: 4, 3+1, 2+2, 2+1+1, 1+1+1+1+1.
MATHEMATICA
Table[ PartitionsP[2^n], {n, 0, 12}]
CROSSREFS
KEYWORD
nonn
AUTHOR
Henry Bottomley, Mar 03 2002
STATUS
approved