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A075200 Number of polyominoes with n cells that tile the plane both by translation and by 180-degree rotation (Conway criterion). 10
1, 1, 2, 5, 9, 24, 41, 121, 212, 520, 773, 2577, 3037, 8081, 13954, 32124, 41695, 118784, 150188, 411484, 604304, 1305265, 1954823, 5326890, 7331606 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

REFERENCES

Branko Gr├╝nbaum 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..25.

Joseph Myers, Polyomino tiling

CROSSREFS

Cf. A054359, A075198, A075199, A075201, A075202, A075203, A075204, A075205, A075206, A075209, A075218.

Sequence in context: A288109 A047044 A109621 * A075198 A294633 A320798

Adjacent sequences:  A075197 A075198 A075199 * A075201 A075202 A075203

KEYWORD

hard,nonn

AUTHOR

Joseph Myers, Sep 08 2002

EXTENSIONS

More terms from Joseph Myers, Nov 04 2003

a(24) and a(25) from Joseph Myers, Nov 17 2010

STATUS

approved

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Last modified June 5 11:52 EDT 2020. Contains 334840 sequences. (Running on oeis4.)