T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with no 2X2 subblock diagonal sum less antidiagonal sum equal to any horizontal or vertical neighbor 2X2 subblock diagonal sum less antidiagonal sum.
A185856
T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with no 2X2 subblock diagonal sum less antidiagonal sum equal to any horizontal or vertical neighbor 2X2 subblock diagonal sum less antidiagonal sum.
Terms
- a(0) =81a(1) =630a(2) =630a(3) =4942a(4) =11610a(5) =4942a(6) =38700a(7) =215880a(8) =215880a(9) =38700a(10) =303212a(11) =4004914a(12) =9546820a(13) =4004914a(14) =303212a(15) =2375550a(16) =74358926a(17) =420747588a(18) =420747588a(19) =74358926a(20) =2375550a(21) =18611050a(22) =1380412312a(23) =18568306790a(24) =44035074450a(25) =18568306790
External references
- oeis: A185856