T(n,k)=Number of nXk 0..1 arrays with every element equal to 1, 2 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero.

A301999

T(n,k)=Number of nXk 0..1 arrays with every element equal to 1, 2 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero.

Terms

    a(0) =0a(1) =1a(2) =0a(3) =1a(4) =2a(5) =0a(6) =2a(7) =2a(8) =5a(9) =0a(10) =3a(11) =8a(12) =5a(13) =13a(14) =0a(15) =5a(16) =18a(17) =26a(18) =15a(19) =34a(20) =0a(21) =8a(22) =50a(23) =84a(24) =74a(25) =48a(26) =89a(27) =0a(28) =13a(29) =128

External references