Number of length n+3 0..7 arrays with no four elements in a row with pattern aabb (possibly a=b) and new values 0..7 introduced in 0..7 order.

A242548

Number of length n+3 0..7 arrays with no four elements in a row with pattern aabb (possibly a=b) and new values 0..7 introduced in 0..7 order.

Terms

    a(0) =13a(1) =43a(2) =166a(3) =712a(4) =3340a(5) =17004a(6) =93103a(7) =543773a(8) =3362689a(9) =21854355a(10) =148145552a(11) =1039764960a(12) =7504319914a(13) =55361803579a(14) =415379230159

External references