Number of ways to quarter an n X n chessboard, with the central square removed for odd n.
A006067
Number of ways to quarter an n X n chessboard, with the central square removed for odd n.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =5a(4) =7a(5) =37a(6) =104a(7) =766a(8) =3970a(9) =43318a(10) =431932a(11) =7695805a(12) =137066448a(13) =4015896016a(14) =128095791922
External references
- oeis: A006067