Number of n X 2 0..2 arrays with no element less than a strict majority of its horizontal, vertical, diagonal and antidiagonal neighbors.
A231747
Number of n X 2 0..2 arrays with no element less than a strict majority of its horizontal, vertical, diagonal and antidiagonal neighbors.
Terms
- a(0) =3a(1) =15a(2) =51a(3) =186a(4) =687a(5) =2485a(6) =9068a(7) =33308a(8) =121445a(9) =444183a(10) =1626731a(11) =5949198a(12) =21774916a(13) =79713938a(14) =291767058a(15) =1068145321a(16) =3910543065a(17) =14316731138a(18) =52417430039a(19) =191916565888a(20) =702674552025
External references
- oeis: A231747