Number of nXn 0..1 arrays with every element unequal to 2, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A317889
Number of nXn 0..1 arrays with every element unequal to 2, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =0a(1) =1a(2) =4a(3) =82a(4) =6193a(5) =1184196a(6) =580702029a(7) =736219004144
External references
- oeis: A317889