OFFSET
0,3
LINKS
Alois P. Heinz, Table of n, a(n) for n = 0..500
FORMULA
a(n) = [x^(n^9)] 1/Product_{j>=0}(1-x^(9^j)).
CROSSREFS
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Oct 07 2011
STATUS
approved