Search: id:a128115
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0, 1, 0, 0, 1, 0, 1, 1, 1, 0, 2, 1, 2, 1, 1, 1, 3, 1, 3, 2, 2, 1, 4, 1, 3, 2, 3, 2, 5, 2, 5, 3, 3, 2, 4, 2, 6, 3, 4, 2, 7, 2, 7, 4, 4, 3, 8, 3, 7, 4, 5, 4, 9, 3, 6, 4, 6, 4, 10, 2, 10, 5, 6, 5, 8, 4, 11, 6, 7, 4, 12, 4, 12, 6, 7, 6, 10, 4, 13, 6, 9, 6, 14, 4, 10, 7, 9, 6, 15, 4, 12, 8, 10, 7, 12, 5, 16, 7
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OFFSET
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1,11
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COMMENTS
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Number of uniform n-grammic crossed antiprisms.
Number of primitive equivalence classes of period 2n billiards on an equilateral triangle. - Andrew Baxter, Jun 06 2008
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LINKS
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FORMULA
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MAPLE
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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Paulo de Almeida Sachs (sachs6(AT)yahoo.de), Feb 15 2007
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EXTENSIONS
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STATUS
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approved
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