a(n) = Product_{k=1..n} (binomial(k-1,4) + binomial(n-k,4)).
A323497
a(n) = Product_{k=1..n} (binomial(k-1,4) + binomial(n-k,4)).
Terms
- a(0) =1a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =0a(8) =6890625a(9) =67528125000
External references
- oeis: A323497