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A075201 Number of polyominoes with n cells that tile the plane by 180-degree rotation (Conway criterion) but not by translation. 10
0, 0, 0, 0, 3, 11, 60, 199, 748, 2181, 5391, 17193, 31881, 85942, 218760, 430339, 728315, 2344106, 3096983, 9344528, 17859116, 31658109, 49644736, 172596719, 228795554 (list; graph; refs; listen; history; internal format)
OFFSET

1,5

REFERENCES

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

LINKS

Joseph Myers, Polyomino tiling

CROSSREFS

Cf. A054359, A075198, A075199, A075200, A075202, A075203, A075204, A075205, A075206, A075210, A075219.

Sequence in context: A112368 A152796 A007807 * A136440 A007146 A076475

Adjacent sequences:  A075198 A075199 A075200 * A075202 A075203 A075204

KEYWORD

hard,nonn

AUTHOR

Joseph Myers (jsm(AT)polyomino.org.uk), Sep 08 2002

EXTENSIONS

More terms from Joseph Myers (jsm(AT)polyomino.org.uk), Nov 04 2003

a(24) and a(25) from Joseph Myers (jsm(AT)polyomino.org.uk), Nov 17 2010

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Last modified February 17 16:26 EST 2012. Contains 206050 sequences.