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

A258681

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

Terms

    a(0) =320a(1) =1600a(2) =1600a(3) =8320a(4) =10000a(5) =8320a(6) =43264a(7) =67600a(8) =67600a(9) =43264a(10) =219648a(11) =456976a(12) =635440a(13) =456976a(14) =219648a(15) =1115136a(16) =2944656a(17) =5973136a(18) =5973136a(19) =2944656a(20) =1115136a(21) =5744640a(22) =18974736a(23) =51939888a(24) =78074896a(25) =51939888a(26) =18974736a(27) =5744640a(28) =29593600

External references