Number of nX7 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 1, 2 or 4 neighboring 1s.
A296642
Number of nX7 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 1, 2 or 4 neighboring 1s.
Terms
- a(0) =37a(1) =2728a(2) =89613a(3) =3713779a(4) =157255466a(5) =6468185511a(6) =267838310277
External references
- oeis: A296642