1/4 the number of (n+1)X3 0..3 arrays with no 2X2 subblock having sum 6.

A183795

1/4 the number of (n+1)X3 0..3 arrays with no 2X2 subblock having sum 6.

Terms

    a(0) =706a(1) =31541a(2) =1405874a(3) =62693809a(4) =2795479074a(5) =124651925557

External references