a(n) = [x^(2*n)] Product_{k=0..n} (1 + k*x)^4.
A384032
a(n) = [x^(2*n)] Product_{k=0..n} (1 + k*x)^4.
Terms
- a(0) =1a(1) =6a(2) =321a(3) =46364a(4) =13052881a(5) =6077950570
External references
- oeis: A384032
A384032
a(n) = [x^(2*n)] Product_{k=0..n} (1 + k*x)^4.