T(n,k) = Half the number of n X k binary arrays with the number of 1-1 horizontal, vertical, diagonal and antidiagonal adjacencies equal to the number of 0-0 adjacencies.
A183289
T(n,k) = Half the number of n X k binary arrays with the number of 1-1 horizontal, vertical, diagonal and antidiagonal adjacencies equal to the number of 0-0 adjacencies.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =1a(6) =2a(7) =6a(8) =6a(9) =2a(10) =3a(11) =18a(12) =1a(13) =18a(14) =3a(15) =6a(16) =60a(17) =180a(18) =180a(19) =60a(20) =6a(21) =10a(22) =210a(23) =116a(24) =2184a(25) =116a(26) =210a(27) =10a(28) =20a(29) =756
External references
- oeis: A183289