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A133047
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Starting from the standard 12 against 12 starting position in checkers, the sequence gives the number of distinct positions that can arise after n moves.
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2
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1, 7, 49, 216, 805, 2733, 9105, 28123, 85340, 255800, 768155, 2265062, 6588759, 18667410, 51448497, 137051636, 353575584, 878804335, 2113497469, 4908984819, 11049271004, 24062242901, 50742319631
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OFFSET
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0,2
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COMMENTS
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These numbers are generally smaller than those in A133046 because one line of play can transpose into another.
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LINKS
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CROSSREFS
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KEYWORD
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nonn,nice
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AUTHOR
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Jonathan Schaeffer (jonathan(AT)cs.ualberta.ca), Dec 27 2007
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EXTENSIONS
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STATUS
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approved
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