Number of nX4 0..1 arrays with each 1 horizontally or vertically adjacent to 1 or 2 1s.
A295036
Number of nX4 0..1 arrays with each 1 horizontally or vertically adjacent to 1 or 2 1s.
Terms
- a(0) =7a(1) =87a(2) =741a(3) =6686a(4) =59126a(5) =528282a(6) =4738235a(7) =42321441a(8) =378112132a(9) =3379951089a(10) =30211913537a(11) =270034246073
External references
- oeis: A295036