Number of nX4 0..1 arrays with each 1 horizontally or vertically adjacent to 0, 1 or 3 1s.
A295249
Number of nX4 0..1 arrays with each 1 horizontally or vertically adjacent to 0, 1 or 3 1s.
Terms
- a(0) =13a(1) =106a(2) =948a(3) =8271a(4) =72745a(5) =638779a(6) =5611444a(7) =49287776a(8) =432936397a(9) =3802804497a(10) =33402966717a(11) =293403800602
External references
- oeis: A295249