OFFSET
0,3
LINKS
Alois P. Heinz, Table of n, a(n) for n = 0..50
FORMULA
a(n) = [x^(9^n)] 1/Product_{j>=0}(1-x^(n^j)) for n>1.
CROSSREFS
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Oct 07 2011
STATUS
approved
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