OFFSET
0,2
FORMULA
a(n) = [q^(2n+6)] Product_{j=1..n+3} (1-q^(2j-1))/(1-q) for n>=0.
MATHEMATICA
a[n_] := SeriesCoefficient[Product[(1-q^(2j-1))/(1-q), {j, 1, n+3}], {q, 0, 2n+6}];
Table[a[n], {n, 0, 30}] (* Jean-François Alcover, Jan 27 2024 *)
PROG
(PARI) {a(n)=polcoeff(prod(j=1, n+3, (1-q^(2*j-1))/(1-q)), 2*n+6, q)}
CROSSREFS
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Mar 12 2007
STATUS
approved