Number of n X n binary arrays without the pattern 0 1 diagonally or antidiagonally.
A188818
Number of n X n binary arrays without the pattern 0 1 diagonally or antidiagonally.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =48a(4) =256a(5) =1360a(6) =7056a(7) =36000a(8) =179776a(9) =884256a(10) =4276624a(11) =20432608a(12) =96353856a(13) =449990080a(14) =2080089664a(15) =9540782208a(16) =43403888896a(17) =196212020800a(18) =881112632976
External references
- oeis: A188818