Number of nX4 0..1 arrays with every element unequal to 0, 1, 2, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A320367
Number of nX4 0..1 arrays with every element unequal to 0, 1, 2, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =8a(1) =128a(2) =1612a(3) =19840a(4) =245060a(5) =3027408a(6) =37398884a(7) =462004160a(8) =5707334644a(9) =70505149536a(10) =870980328164
External references
- oeis: A320367