T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with no 2X2 subblock having the sum of its diagonal elements less than the maximum of its antidiagonal elements.
A251019
T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with no 2X2 subblock having the sum of its diagonal elements less than the maximum of its antidiagonal elements.
Terms
- a(0) =63a(1) =423a(2) =423a(3) =2828a(4) =6653a(5) =2828a(6) =18910a(7) =105897a(8) =105897a(9) =18910a(10) =126468a(11) =1691169a(12) =4006992a(13) =1691169a(14) =126468a(15) =845838a(16) =27018053a(17) =151364054a(18) =151364054a(19) =27018053a(20) =845838a(21) =5657125a(22) =431623476a(23) =5710752444a(24) =13508173078a(25) =5710752444a(26) =431623476
External references
- oeis: A251019