OFFSET
0,3
PROG
(PARI) my(N=70, x='x+O('x^N)); Vec(prod(k=1, N, (1-x^(7*k-3))*(1-x^(7*k-4))/((1-x^(7*k-2))*(1-x^(7*k-5))))^2)
CROSSREFS
KEYWORD
sign
AUTHOR
Seiichi Manyama, Aug 03 2024
STATUS
approved