Number of n X n 0..1 arrays with every element equal to 0, 1, 3 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A302421
Number of n X n 0..1 arrays with every element equal to 0, 1, 3 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =3a(2) =11a(3) =42a(4) =372a(5) =4231a(6) =48037a(7) =1171867a(8) =30957683a(9) =1262711362a(10) =67345167687
External references
- oeis: A302421