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A054359
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Number of polyominoes with n cells that tile the plane.
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13
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1, 1, 2, 5, 12, 35, 104, 343, 1050, 3070, 6620, 23449, 38669, 109104, 279583, 546893, 827035, 3057332, 3381124, 12126683, 21921192, 37008138, 53327764, 220908809, 271293803
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,3
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REFERENCES
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Glenn C. Rhoads (rhoads(AT)paul.rutgers.edu), rec.puzzles, Feb 17 2000.
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LINKS
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CROSSREFS
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KEYWORD
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nonn,hard
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AUTHOR
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Joe Keane (jgk(AT)jgk.org)
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EXTENSIONS
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STATUS
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approved
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