OFFSET
0,6
COMMENTS
Number of compositions into positive pentagonal numbers (A000326). [Joerg Arndt, Jun 10 2011]
PROG
(PARI) N=99; x='x+O('x^N);
Vec(1/(1-sum(n=1, N, x^(n*(3*n-1)/2)))) /* show terms */
CROSSREFS
KEYWORD
nonn
AUTHOR
Joerg Arndt, Jan 27 2011
STATUS
approved