Number of nX6 0..4 arrays with each element equal to the number its horizontal and vertical zero neighbors.

A197052

Number of nX6 0..4 arrays with each element equal to the number its horizontal and vertical zero neighbors.

Terms

    a(0) =5a(1) =16a(2) =78a(3) =274a(4) =1132a(5) =4468a(6) =17742a(7) =70616a(8) =281202a(9) =1117442a(10) =4448148a(11) =17693664a(12) =70390082a(13) =280040518a(14) =1114106280a(15) =4432207738a(16) =17633023628a(17) =70149839190a(18) =279079644000

External references