Number of nXn 0..1 arrays with every element unequal to 1, 2, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero.

A316449

Number of nXn 0..1 arrays with every element unequal to 1, 2, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =0a(1) =3a(2) =9a(3) =48a(4) =1591a(5) =53863a(6) =4145337a(7) =935229204a(8) =873192441329

External references