Row 2 of square array defined in A047675: 2*n!*(n+1)!.
A047677
Row 2 of square array defined in A047675: 2*n!*(n+1)!.
Terms
- a(0) =2a(1) =4a(2) =24a(3) =288a(4) =5760a(5) =172800a(6) =7257600a(7) =406425600a(8) =29262643200
External references
- oeis: A047677