1696464
domain: N
Appears in sequences
- Quintuple factorial numbers: a(n) = Product_{k=0..n-1} (5*k + 2).at n=6A047055
- Duplicate of A047055.at n=6A084946
- Quintuple factorials, 5-factorials, n!!!!!, n!5.at n=27A085157
- Triangle read by rows: t(n,m)=If[m == 0, 1, Product[m*k + 2, {k, 0, n}]].at n=20A153190
- Triangle of sums of the first k n-th powers multiplied by binomial(n,k), read by rows.at n=48A215078
- Expansion of Product_{k>=1} ((1+x^k)/(1-x^k))^(2*k).at n=14A261386