Number of nX5 0..1 arrays with every element equal to 0, 1, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

A302306

Number of nX5 0..1 arrays with every element equal to 0, 1, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Terms

    a(0) =8a(1) =31a(2) =48a(3) =194a(4) =445a(5) =1271a(6) =3915a(7) =12420a(8) =42897a(9) =158170a(10) =605532a(11) =2395817a(12) =9709409a(13) =39880121a(14) =165585758a(15) =693033415a(16) =2914777618a(17) =12305134022a(18) =52090542883a(19) =220906709231a(20) =938079788895

External references