Number of 3Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1, 2 or 4 neighboring 1s.
A297722
Number of 3Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1, 2 or 4 neighboring 1s.
Terms
- a(0) =1a(1) =29a(2) =145a(3) =523a(4) =2717a(5) =14462a(6) =68919a(7) =332306a(8) =1652441a(9) =8140067a(10) =39816114a(11) =195543171a(12) =961617387a(13) =4722204339a(14) =23186542778a(15) =113898106759a(16) =559470061363
External references
- oeis: A297722