(2^n+1)*(2^n+2)*(2^n+4)*(2^n+6)*(4^n+15*2^n+176)/8!.
A030539
(2^n+1)*(2^n+2)*(2^n+4)*(2^n+6)*(4^n+15*2^n+176)/8!.
Terms
- a(0) =1a(1) =3a(2) =15a(3) =135a(4) =2244a(5) =63954a(6) =2649790a(7) =135954390a(8) =7791419142a(9) =471957819750
External references
- oeis: A030539