T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum plus the lower median minus the upper median of every 2X2 subblock equal.

A237225

T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum plus the lower median minus the upper median of every 2X2 subblock equal.

Terms

    a(0) =256a(1) =1416a(2) =1416a(3) =8238a(4) =14472a(5) =8238a(6) =50998a(7) =161598a(8) =161598a(9) =50998a(10) =324760a(11) =2006382a(12) =3460428a(13) =2006382a(14) =324760a(15) =2135910a(16) =25423162a(17) =84409628a(18) =84409628a(19) =25423162a(20) =2135910a(21) =14272968a(22) =338131394a(23) =2037318606a(24) =4161666604a(25) =2037318606a(26) =338131394

External references