Number of ways, counted up to symmetry, to build a contiguous building with n LEGO blocks of size 2 X 3.

A123824

Number of ways, counted up to symmetry, to build a contiguous building with n LEGO blocks of size 2 X 3.

Terms

    a(0) =1a(1) =16a(2) =697a(3) =34958a(4) =1947321a(5) =114675898a(6) =7026150623a(7) =443114008903

External references