Number of nX5 0..1 arrays with every element equal to 1, 2, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A302525
Number of nX5 0..1 arrays with every element equal to 1, 2, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =3a(1) =27a(2) =100a(3) =539a(4) =3683a(5) =17546a(6) =92603a(7) =615351a(8) =3268978a(9) =18424095a(10) =115923699a(11) =662227998a(12) =3859905731a(13) =23738169083a(14) =140046826890a(15) =831779950595
External references
- oeis: A302525