Number of (n+4) X 9 binary arrays with every 1 having exactly three king-move neighbors equal to 1 but with no 2 X 2 blocks of 1's.
A183462
Number of (n+4) X 9 binary arrays with every 1 having exactly three king-move neighbors equal to 1 but with no 2 X 2 blocks of 1's.
Terms
- a(0) =4a(1) =59a(2) =498a(3) =1577a(4) =8702a(5) =42613a(6) =210362a(7) =1459669a(8) =7676361a(9) =44631710a(10) =307975889a(11) =1766468801a(12) =10941194118a(13) =74842408447a(14) =452000693891
External references
- oeis: A183462