Number of (n+1)X7 0..2 arrays with no 2X2 subblock summing to less than 4.

A184561

Number of (n+1)X7 0..2 arrays with no 2X2 subblock summing to less than 4.

Terms

    a(0) =603249a(1) =390354307a(2) =203570564774

External references