A075209 Number of polyhexes with n cells that tile the plane both by translation and by 180-degree rotation (Conway criterion).
1, 1, 3, 6, 12, 36, 59, 208, 373, 1024, 1380, 5966, 6012, 20061, 32939, 91715, 99540, 381899, 390781, 1486746, 1856858
Offset: 1
References
- Branko Grünbaum and G. C. Shephard, Tilings and Patterns. W. H. Freeman, New York, 1987, Section 9.4.
Links
- Joseph Myers, Polyhex tiling
Crossrefs
Extensions
More terms from Joseph Myers, Nov 08 2003
More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), May 05 2007