1/4 the number of (n+1)X5 0..3 arrays with no 2X2 subblock having sum 6.

A183797

1/4 the number of (n+1)X5 0..3 arrays with no 2X2 subblock having sum 6.

Terms

    a(0) =125050a(1) =62693809a(2) =31282399226

External references