OFFSET
0,3
LINKS
Alois P. Heinz, Table of n, a(n) for n = 0..150
FORMULA
a(n) = [x^(2^n)] 1/Product_{j>=0}(1-x^(n^j)).
EXAMPLE
a(3) = 3 because there are 3 partitions of 2^3=8 into powers of 3: [1,1,3,3], [1,1,1,1,1,3], [1,1,1,1,1,1,1,1].
CROSSREFS
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Oct 07 2011
STATUS
approved