A075207 Number of polyhexes with n cells that tile the plane by translation.

1, 1, 3, 6, 12, 36, 60, 209, 387, 1054, 1468, 6895, 7001, 23920, 49496, 126732, 146046, 638800, 647502, 2772935, 4162861

Offset

1,3

References

Branko Grünbaum and G. C. Shephard, Tilings and Patterns. W. H. Freeman, New York, 1987, Section 9.4.

Links

Table of n, a(n) for n=1..21.

Joseph Myers, Polyhex tiling

Crossrefs

Cf. A070766, A075208, A075209, A075210, A075211, A075212, A075213, A075214, A075215, A075198, A075216.

Sequence in context: A033648 A102972 A075209 * A208131 A136121 A023369

Adjacent sequences: A075204 A075205 A075206 * A075208 A075209 A075210

Keyword

hard,nonn

Author

Joseph Myers, Sep 08 2002

Extensions

More terms from Joseph Myers, Nov 08 2003

More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), May 05 2007

Status

approved