Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 1 1 1 vertically.

A207508

Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 1 1 1 vertically.

Terms

    a(0) =2a(1) =16a(2) =72a(3) =438a(4) =2638a(5) =10340a(6) =50322a(7) =221672a(8) =938572a(9) =4001444a(10) =16081184a(11) =65882872a(12) =265536422a(13) =1041167756a(14) =4136910380a(15) =16075083164a(16) =62441083194a(17) =240925209706a(18) =924668629616

External references