T(n,k)=Number of nXk 0..1 arrays with no 1 equal to more than three of its horizontal, diagonal and antidiagonal neighbors.

A283857

T(n,k)=Number of nXk 0..1 arrays with no 1 equal to more than three of its horizontal, diagonal and antidiagonal neighbors.

Terms

    a(0) =2a(1) =4a(2) =4a(3) =8a(4) =16a(5) =8a(6) =16a(7) =61a(8) =64a(9) =16a(10) =32a(11) =233a(12) =409a(13) =256a(14) =32a(15) =64a(16) =896a(17) =2776a(18) =2837a(19) =1024a(20) =64a(21) =128a(22) =3444a(23) =19220a(24) =35373a(25) =19776a(26) =4096a(27) =128a(28) =256a(29) =13225

External references