Number of nX3 0..1 arrays with each 1 horizontally or vertically adjacent to 0, 1 or 3 1s.
A295248
Number of nX3 0..1 arrays with each 1 horizontally or vertically adjacent to 0, 1 or 3 1s.
Terms
- a(0) =7a(1) =35a(2) =183a(3) =948a(4) =4928a(5) =25596a(6) =132993a(7) =690938a(8) =3589717a(9) =18649981a(10) =96894136a(11) =503403630a(12) =2615382795a(13) =13587956889a(14) =70594857262a(15) =366768447408
External references
- oeis: A295248