T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 2 or 4.

A251682

T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 2 or 4.

Terms

    a(0) =293a(1) =489a(2) =489a(3) =953a(4) =865a(5) =953a(6) =2257a(7) =2089a(8) =2089a(9) =2257a(10) =5151a(11) =5065a(12) =5527a(13) =5065a(14) =5151a(15) =12063a(16) =13031a(17) =16467a(18) =16467a(19) =13031a(20) =12063a(21) =29839a(22) =36075a(23) =54523a(24) =64309a(25) =54523a(26) =36075a(27) =29839a(28) =72345a(29) =100307

External references