Number of nX4 0..1 arrays with each 1 horizontally or vertically adjacent to 0, 1, 3 or 4 1s.
A295648
Number of nX4 0..1 arrays with each 1 horizontally or vertically adjacent to 0, 1, 3 or 4 1s.
Terms
- a(0) =13a(1) =106a(2) =956a(3) =8391a(4) =74335a(5) =657178a(6) =5812860a(7) =51408810a(8) =454678898a(9) =4021307228a(10) =35565664275a(11) =314553293487
External references
- oeis: A295648