Number of 4Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1 or 3 neighboring 1s.
A297522
Number of 4Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1 or 3 neighboring 1s.
Terms
- a(0) =1a(1) =24a(2) =177a(3) =624a(4) =2610a(5) =15896a(6) =85843a(7) =402072a(8) =1970884a(9) =10281752a(10) =52457558a(11) =260911506a(12) =1310325200a(13) =6651660023a(14) =33617677893a(15) =169149591947a(16) =852752626610
External references
- oeis: A297522