Number of nX4 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 1, 2 or 3 neighboring 1s.
A296595
Number of nX4 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 1, 2 or 3 neighboring 1s.
Terms
- a(0) =7a(1) =136a(2) =1441a(3) =16524a(4) =194743a(5) =2271055a(6) =26487173a(7) =309059200a(8) =3606151826a(9) =42075891572a(10) =490933874225
External references
- oeis: A296595