T(n,k) = Number of n X k 0..1 arrays with the number of 1's horizontally, antidiagonally or vertically adjacent to some 0 two less than the number of 0's adjacent to some 1.
A289651
T(n,k) = Number of n X k 0..1 arrays with the number of 1's horizontally, antidiagonally or vertically adjacent to some 0 two less than the number of 0's adjacent to some 1.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =2a(5) =0a(6) =0a(7) =11a(8) =11a(9) =0a(10) =0a(11) =44a(12) =61a(13) =44a(14) =0a(15) =1a(16) =170a(17) =607a(18) =607a(19) =170a(20) =1a(21) =3a(22) =642a(23) =3160a(24) =8554a(25) =3160a(26) =642a(27) =3a(28) =10a(29) =2421
External references
- oeis: A289651