a(n) = [x^n] Product_{k=1..4*n} 1/(1 - k*x).
A383882
a(n) = [x^n] Product_{k=1..4*n} 1/(1 - k*x).
Terms
- a(0) =1a(1) =10a(2) =750a(3) =106470a(4) =22350954a(5) =6220194750
External references
- oeis: A383882
A383882
a(n) = [x^n] Product_{k=1..4*n} 1/(1 - k*x).