Number of n X n 0..1 arrays with every element equal to 0, 2 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A302206
Number of n X n 0..1 arrays with every element equal to 0, 2 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =2a(2) =16a(3) =7a(4) =448a(5) =1395a(6) =55922a(7) =3509969a(8) =73189971a(9) =33707749345
External references
- oeis: A302206