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A054360
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Number of polyominoes with n cells that do not tile the plane.
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5
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0, 0, 0, 0, 0, 0, 4, 26, 235, 1585, 10453, 40151, 199922, 792867, 3146993, 12532362, 49280874, 189564720, 739243108, 2858545267, 11101139486, 43154849550, 167993679964, 654778791594, 2556955750961
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,7
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REFERENCES
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Posting by Glenn C. Rhoads (rhoads(AT)paul.rutgers.edu) to rec.puzzles, Feb 17 2000.
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LINKS
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EXAMPLE
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a(7) = 4.
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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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