a(n) = [n/2]!*[(n+1)/2]!*C([n/2],6)*C([(n+1)/2],6).
A226287
a(n) = [n/2]!*[(n+1)/2]!*C([n/2],6)*C([(n+1)/2],6).
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =0a(8) =0a(9) =0a(10) =0a(11) =518400a(12) =25401600a(13) =1244678400a(14) =39829708800
External references
- oeis: A226287