Number of n X n 0..1 arrays with every element unequal to 0, 1, 3, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A326159
Number of n X n 0..1 arrays with every element unequal 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) =9a(3) =85a(4) =1136a(5) =39808a(6) =3984553a(7) =1000921717a(8) =666253766253
External references
- oeis: A326159