T(n,k) = Number of n X k 0..1 arrays with the number of 1's horizontally or vertically adjacent to some 0 two less than the number of 0's adjacent to some 1.
A286979
T(n,k) = Number of n X k 0..1 arrays with the number of 1's horizontally 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) =0a(5) =0a(6) =0a(7) =5a(8) =5a(9) =0a(10) =0a(11) =30a(12) =50a(13) =30a(14) =0a(15) =1a(16) =126a(17) =538a(18) =538a(19) =126a(20) =1a(21) =3a(22) =520a(23) =3932a(24) =8270a(25) =3932a(26) =520a(27) =3a(28) =10a(29) =2088
External references
- oeis: A286979