1/12 the number of (n+2)X7 0..2 arrays with each 3X3 subblock containing one of one value, three of another, and five of the last.

A184503

1/12 the number of (n+2)X7 0..2 arrays with each 3X3 subblock containing one of one value, three of another, and five of the last.

Terms

    a(0) =149112a(1) =281876a(2) =579771a(3) =1315452a(4) =3530858a(5) =10185105

External references