T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with some row, column, diagonal or antidiagonal in every 3X3 subblock summing to 3.

A251641

T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with some row, column, diagonal or antidiagonal in every 3X3 subblock summing to 3.

Terms

    a(0) =17511a(1) =429399a(2) =429399a(3) =10560127a(4) =29245729a(5) =10560127a(6) =259228149a(7) =2000922455a(8) =2000922455a(9) =259228149a(10) =6364650023a(11) =136454122643a(12) =381543775543a(13) =136454122643a(14) =6364650023a(15) =156279294337

External references