Number of ways to place 8n nonattacking kings on a vertical cylinder 16 X 2n.
A195657
Number of ways to place 8n nonattacking kings on a vertical cylinder 16 X 2n.
Terms
- a(0) =512a(1) =17536a(2) =218052a(3) =1599820a(4) =8500668a(5) =36383284a(6) =133538996a(7) =437500380a(8) =1314748124a(9) =3694894500a(10) =9849731140a(11) =25173962492a(12) =62193359676a(13) =149475988116a(14) =351246183572a(15) =810197361564
External references
- oeis: A195657