T(n,k) is the number of (n+1) X (k+1) 0..6 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 5 (constant-stress 1 X 1 tilings).
A234690
T(n,k) is the number of (n+1) X (k+1) 0..6 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 5 (constant-stress 1 X 1 tilings).
Terms
- a(0) =232a(1) =1148a(2) =1148a(3) =5472a(4) =4416a(5) =5472a(6) =27344a(7) =16580a(8) =16580a(9) =27344a(10) =131200a(11) =69336a(12) =49480a(13) =69336a(14) =131200a(15) =661952a(16) =281612a(17) =174320a(18) =174320a(19) =281612a(20) =661952a(21) =3196416a(22) =1253088a(23) =603480a(24) =531984a(25) =603480a(26) =1253088a(27) =3196416a(28) =16276736a(29) =5385236
External references
- oeis: A234690