T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically or nw-to-se diagonally exactly three ways, and new values 0..3 introduced in row major order.

A204483

T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically or nw-to-se diagonally exactly three ways, and new values 0..3 introduced in row major order.

Terms

    a(0) =80a(1) =307a(2) =307a(3) =1157a(4) =1326a(5) =1157a(6) =1899a(7) =3147a(8) =3147a(9) =1899a(10) =7191a(11) =2745a(12) =608a(13) =2745a(14) =7191a(15) =24718a(16) =8114a(17) =1587a(18) =1587a(19) =8114a(20) =24718a(21) =70726a(22) =29959a(23) =2632a(24) =1482a(25) =2632a(26) =29959a(27) =70726a(28) =277992a(29) =111707

External references