Number of nX7 0..1 arrays with every element equal to 0, 1, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A300505
Number of nX7 0..1 arrays with every element equal to 0, 1, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =21a(1) =11a(2) =34a(3) =191a(4) =546a(5) =4067a(6) =17412a(7) =112660a(8) =634311a(9) =3789374a(10) =21768434a(11) =127922510a(12) =740390307a(13) =4332789535a(14) =25223205362a(15) =147301185909a(16) =859118123084
External references
- oeis: A300505