Number of 2 X n 0..1 arrays with no 1 equal to more than one of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly two elements.
A283635
Number of 2 X n 0..1 arrays with no 1 equal to more than one of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly two elements.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =36a(4) =88a(5) =516a(6) =2076a(7) =7372a(8) =27108a(9) =92436a(10) =308980a(11) =1013112a(12) =3250572a(13) =10288376a(14) =32139960a(15) =99287748a(16) =303857760a(17) =922134588a(18) =2777950524a(19) =8314125460a(20) =24737931132a(21) =73218906420a(22) =215681560092a(23) =632587894224
External references
- oeis: A283635