Number of nX2 0..1 arrays with no 1 equal to more than three of its king-move neighbors, with the exception of exactly one element.

A282435

Number of nX2 0..1 arrays with no 1 equal to more than three of its king-move neighbors, with the exception of exactly one element.

Terms

    a(0) =0a(1) =0a(2) =2a(3) =12a(4) =58a(5) =280a(6) =1276a(7) =5592a(8) =24004a(9) =101280a(10) =421414a(11) =1734516a(12) =7075870a(13) =28650904a(14) =115279840a(15) =461334112a(16) =1837537544a(17) =7289020544a(18) =28808705642a(19) =113494402076a(20) =445829029698

External references