Number of n X n 0..1 arrays with every element equal to 0, 1, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A302674
Number of n X n 0..1 arrays with every element equal to 0, 1, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =3a(2) =8a(3) =20a(4) =63a(5) =453a(6) =6311a(7) =92889a(8) =1847358a(9) =65801890a(10) =3339677315a(11) =218906752065
External references
- oeis: A302674