Number of nX4 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1 or 2 neighboring 1s.
A297502
Number of nX4 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1 or 2 neighboring 1s.
Terms
- a(0) =7a(1) =68a(2) =314a(3) =2281a(4) =14201a(5) =88808a(6) =573119a(7) =3613793a(8) =22999331a(9) =146183595a(10) =928047561a(11) =5898371728a(12) =37468267405a(13) =238038322708
External references
- oeis: A297502