A094169 Number of rooted 2-dimensional polyominoes with n octagonal cells, with no symmetries removed.

1, 8, 60, 440, 3230, 23688, 173796, 1275240, 9359748, 68708320, 504466468, 3704376384, 27205146592

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

• Daniel J. Heath and R. Robert Rdyberg, III, On Polyominoes and Digital Cameras, Mathematics Magazine, Vol. 90, No. 2 (April 2017), pp. 135-141.
• R. C. Schroeppel, A few mathematical experiments

Crossrefs

A row of A094166.