Number of 4Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2 or 3 neighboring 1s.
A297547
Number of 4Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2 or 3 neighboring 1s.
Terms
- a(0) =1a(1) =7a(2) =88a(3) =275a(4) =1233a(5) =10234a(6) =65363a(7) =355573a(8) =2194764a(9) =14070932a(10) =85652323a(11) =519260961a(12) =3211470573a(13) =19819925799a(14) =121490746063a(15) =746218947635
External references
- oeis: A297547