Number of nX3 0..1 arrays with each 1 horizontally or vertically adjacent to 1 or 2 1s.
A295035
Number of nX3 0..1 arrays with each 1 horizontally or vertically adjacent to 1 or 2 1s.
Terms
- a(0) =4a(1) =29a(2) =140a(3) =741a(4) =3853a(5) =19956a(6) =104096a(7) =541775a(8) =2819027a(9) =14671776a(10) =76356631a(11) =397392690a(12) =2068192977a(13) =10763659993a(14) =56018290276a(15) =291541126302
External references
- oeis: A295035