a(n) = (n+1)^3*(3+n)!/6.
A154306
a(n) = (n+1)^3*(3+n)!/6.
Terms
- a(0) =1a(1) =32a(2) =540a(3) =7680a(4) =105000a(5) =1451520a(6) =20744640a(7) =309657600a(8) =4849891200a(9) =79833600000
External references
- oeis: A154306
A154306
a(n) = (n+1)^3*(3+n)!/6.