Number of n X n binary arrays without the pattern 0 1 diagonally, vertically or antidiagonally.

A188860

Number of n X n binary arrays without the pattern 0 1 diagonally, vertically or antidiagonally.

Terms

    a(0) =1a(1) =2a(2) =7a(3) =26a(4) =95a(5) =340a(6) =1193a(7) =4116a(8) =14001a(9) =47064a(10) =156629a(11) =516844a(12) =1693073a(13) =5511218a(14) =17841247a(15) =57477542a(16) =184377699a(17) =589195584a(18) =1876395357a(19) =5957318820a(20) =18861068265a(21) =59563612974a(22) =187668462027a(23) =590039959434

External references