Number of distinct connected planar figures that can be formed from 1 X 2 rectangles (or dominoes) such that each pair of touching rectangles shares exactly one edge, of length 1.

A216595

Number of distinct connected planar figures that can be formed from 1 X 2 rectangles (or dominoes) such that each pair of touching rectangles shares exactly one edge, of length 1.

Terms

    a(0) =1a(1) =2a(2) =14a(3) =126a(4) =1267a(5) =13550a(6) =150665

External references