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

A184498

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

Terms

    a(0) =252a(1) =4546a(2) =50590a(3) =425814a(4) =3530858

External references