Number of nX4 0..1 arrays with each 1 horizontally or vertically adjacent to 1, 2 or 3 1s.
A295412
Number of nX4 0..1 arrays with each 1 horizontally or vertically adjacent to 1, 2 or 3 1s.
Terms
- a(0) =7a(1) =126a(2) =1534a(3) =19026a(4) =240439a(5) =3019079a(6) =37927609a(7) =476686533a(8) =5990217198a(9) =75274793595a(10) =945936754846
External references
- oeis: A295412