Number of nX5 0..1 arrays with every element equal to 1, 2, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A300543
Number of nX5 0..1 arrays with every element equal to 1, 2, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =3a(1) =129a(2) =2879a(3) =61561a(4) =1338834a(5) =29114990a(6) =632777378a(7) =13752553340a(8) =298894998879
External references
- oeis: A300543