Number of nX4 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 0 or 2 neighboring 1s.
A297453
Number of nX4 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 0 or 2 neighboring 1s.
Terms
- a(0) =8a(1) =57a(2) =285a(3) =1677a(4) =9774a(5) =55713a(6) =321030a(7) =1848151a(8) =10625522a(9) =61131830a(10) =351682612a(11) =2023019752a(12) =11637747389a(13) =66947610020a(14) =385122792748
External references
- oeis: A297453