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A076437
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Square board sizes for which the lights out problem has a unique solution (counting solutions differing only by rotation and reflection as equivalent).
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4
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1, 2, 3, 5, 6, 7, 8, 10, 12, 13, 15, 17, 18, 20, 21, 22, 25, 26, 27, 28, 31, 36, 37, 38, 40, 41, 42, 43, 45, 46, 48, 51, 52, 53, 55, 56, 57, 58, 60, 63, 66, 68, 70, 72, 73, 75, 76, 77, 78, 80
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,2
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LINKS
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CROSSREFS
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KEYWORD
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nonn,more
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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