Number of nX7 0..1 arrays with every element equal to 1, 2 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero.
A301998
Number of nX7 0..1 arrays with every element equal to 1, 2 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =8a(1) =128a(2) =1108a(3) =10982a(4) =122232a(5) =1366374a(6) =15243860a(7) =169636124a(8) =1884309898a(9) =20919022400a(10) =232254936138
External references
- oeis: A301998