T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every consecutive three elements in every row and column having exactly two distinct values, and new values 0 upwards introduced in row major order.

A252904

T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every consecutive three elements in every row and column having exactly two distinct values, and new values 0 upwards introduced in row major order.

Terms

    a(0) =384a(1) =2793a(2) =2793a(3) =19320a(4) =30453a(5) =19320a(6) =139968a(7) =306680a(8) =306680a(9) =139968a(10) =997740a(11) =3255537a(12) =4385530a(13) =3255537a(14) =997740a(15) =7214139a(16) =33858062a(17) =66702186a(18) =66702186a(19) =33858062a(20) =7214139a(21) =51847038a(22) =357165303a(23) =990142582a(24) =1470299799a(25) =990142582

External references