Number of n X n 0..1 arrays with every element equal to 0, 1, 3, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A300882
Number of n X n 0..1 arrays with every element equal to 0, 1, 3, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =3a(2) =4a(3) =40a(4) =808a(5) =47487a(6) =6236246a(7) =1923849671
External references
- oeis: A300882