Number of nX7 0..1 arrays with every element equal to 0, 1, 3 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A302426
Number of nX7 0..1 arrays with every element equal to 0, 1, 3 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =21a(1) =185a(2) =188a(3) =532a(4) =4223a(5) =14764a(6) =48037a(7) =227283a(8) =940829a(9) =3489620a(10) =14387459a(11) =59418248a(12) =233645986a(13) =941269019a(14) =3823009297a(15) =15290825815a(16) =61530089164a(17) =248256753643a(18) =996694292892
External references
- oeis: A302426