OFFSET

1,2

COMMENTS

Number of polypents (like polyominoes, with pentagons) with n cells. These are anchored polypents, with no culling for reflection or rotation (or translation) isomorphism.

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

KEYWORD

nonn

AUTHOR

Richard C. Schroeppel, Feb 13 2002

EXTENSIONS

More terms from N. J. A. Sloane, May 06 2004

Edited by N. J. A. Sloane, Sep 15 2008 at the suggestion of R. J. Mathar

STATUS

approved