1297504

Appears in sequences

• Square array A(n,k) = (n!)^3 [x^n] hypergeom([], [1, 1], z)^k read by antidiagonals.at n=50A287698
• a(n) = (n!)^3 * [x^n] hypergeom([], [1, 1], x)^4.at n=5A287699
• a(n) = (5!)^3 * [z^5] hypergeom([], [1,1], z)^n.at n=4A287701
• Number of subsets of {1..n} such that every pair of distinct elements has a different quotient.at n=24A325860