T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with no 2X2 subblock having the sum of its diagonal elements less than the absolute difference of its antidiagonal elements.
A250973
T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with no 2X2 subblock having the sum of its diagonal elements less than the absolute difference of its antidiagonal elements.
Terms
- a(0) =14a(1) =49a(2) =49a(3) =172a(4) =308a(5) =172a(6) =604a(7) =1945a(8) =1945a(9) =604a(10) =2121a(11) =12281a(12) =22048a(13) =12281a(14) =2121a(15) =7448a(16) =77537a(17) =249921a(18) =249921a(19) =77537a(20) =7448a(21) =26154a(22) =489543a(23) =2833397a(24) =5089900a(25) =2833397a(26) =489543a(27) =26154a(28) =91841a(29) =3090834
External references
- oeis: A250973