Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A300932
Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =7a(2) =52a(3) =505a(4) =6220a(5) =97745a(6) =2038646a(7) =57179007a(8) =2175995920a(9) =112292412019
External references
- oeis: A300932