Number of ways to tile hexagon of edge n with diamonds of side 1, not counting rotations and reflections as different.

A066931

Number of ways to tile hexagon of edge n with diamonds of side 1, not counting rotations and reflections as different.

Terms

    a(0) =1a(1) =1a(2) =6a(3) =113a(4) =20174a(5) =22306955a(6) =123222909271

External references