Number of 2Xn 0..1 arrays with no 1 equal to more than one of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly one element.
A283573
Number of 2Xn 0..1 arrays with no 1 equal to more than one of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly one element.
Terms
- a(0) =0a(1) =4a(2) =26a(3) =72a(4) =282a(5) =908a(6) =2832a(7) =8856a(8) =26750a(9) =80088a(10) =237190a(11) =695272a(12) =2024064a(13) =5853676a(14) =16835874a(15) =48194664a(16) =137385394a(17) =390201476a(18) =1104636144a(19) =3118021376a(20) =8778028806a(21) =24653647608a(22) =69091665822a(23) =193246772832a(24) =539525988960
External references
- oeis: A283573