1/4 the number of (n+1)X4 0..3 arrays with no 2X2 subblock having sum 6.

A183796

1/4 the number of (n+1)X4 0..3 arrays with no 2X2 subblock having sum 6.

Terms

    a(0) =9395a(1) =1405874a(2) =209636605a(3) =31282399226

External references