Number of n X n 0..1 arrays with every element equal to 0, 1, 3, 4, 5 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A301492
Number of n X n 0..1 arrays with every element equal to 0, 1, 3, 4, 5 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =3a(2) =5a(3) =83a(4) =2803a(5) =268802a(6) =62812639a(7) =39447933621
External references
- oeis: A301492