Number of nX6 0..1 arrays with every element equal to 1, 2, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A302726
Number of nX6 0..1 arrays with every element equal to 1, 2, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =5a(1) =45a(2) =162a(3) =689a(4) =4505a(5) =20842a(6) =104969a(7) =623549a(8) =3195095a(9) =16779202a(10) =94570299a(11) =502818683a(12) =2684335804a(13) =14798497776a(14) =79585694357a(15) =428251526577
External references
- oeis: A302726