15628090140
domain: N
Appears in sequences
- Expansion of 1/(1-4*x)^(9/2).at n=12A020920
- a(n) = (8*n)!*n!/((4*n)!*(3*n)!*(2*n)!).at n=4A211420
- a(n) = A003418(n)/A000793(n).at n=31A225558
- a(n) = A003418(n)/A000793(n).at n=34A225558
- Square array read by ascending antidiagonals: T(n,k) = [x^(3*k)] ( (1 + x)^(n+3)/(1 - x)^(n-3) )^k for n, k >= 0.at n=49A364519