T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with no 3x3 subblock diagonal sum less than the antidiagonal sum or central row sum equal to the central column sum.

A258545

T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with no 3x3 subblock diagonal sum less than the antidiagonal sum or central row sum equal to the central column sum.

Terms

    a(0) =220a(1) =784a(2) =784a(3) =2520a(4) =2916a(5) =2520a(6) =8100a(7) =8836a(8) =8836a(9) =8100a(10) =25056a(11) =27889a(12) =20736a(13) =27889a(14) =25056a(15) =77284a(16) =81796a(17) =57600a(18) =57600a(19) =81796a(20) =77284a(21) =234848a(22) =241081a(23) =142544a(24) =161604a(25) =142544a(26) =241081a(27) =234848a(28) =712336a(29) =682276

External references