Number of nX4 0..1 arrays with each 1 horizontally or vertically adjacent to 1, 3 or 4 1s.
A295547
Number of nX4 0..1 arrays with each 1 horizontally or vertically adjacent to 1, 3 or 4 1s.
Terms
- a(0) =4a(1) =24a(2) =116a(3) =598a(4) =3035a(5) =15352a(6) =78434a(7) =399324a(8) =2032606a(9) =10348672a(10) =52692507a(11) =268312054a(12) =1366173209a(13) =6956133881a(14) =35419004021a(15) =180345636773a(16) =918277914237
External references
- oeis: A295547