A094168 Number of rooted 2-dimensional polyominoes with n heptagonal cells, with no symmetries removed.

1, 7, 42, 252, 1505, 8946, 53165, 315980, 1878597, 11171930, 66456082, 395399760, 2352979538, 14004512886

Offset: 1

Author

N. J. A. Sloane, May 06 2004

Keywords

• nonn

References

• Dan Hoey, Bill Gosper and Richard C. Schroeppel, Discussions in Math-Fun Mailing list, circa Jul 13 1999.

Links

• R. C. Schroeppel, A few mathematical experiments

Crossrefs

A row of A094166.