737535

Appears in sequences

• Expansion of Product_{k>=1} (1 - x^(5*k))^(5*k) / (1 - x^k)^k.at n=27A285246
• a(n) is the number of quintuples (a_1,a_2,a_3,a_4,a_5) having all terms in {1,...,n} such that there exists a pentagon with these side-lengths.at n=15A346637