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A143807
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Number of geodesics between a pair of perfect states in the Tower of Hanoi with 4 pegs and n disks.
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0
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1, 2, 2, 22, 40, 18, 2468, 11698, 11426, 2178, 74056628
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listen;
history;
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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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Sequence A007664 gives the lengths of the geodesics being counted by the present sequence (conjecturally this is true for all n; experimentally it is true for the first 20 terms)
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KEYWORD
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hard,nonn
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AUTHOR
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Jason Behrstock (jason(AT)math.columbia.edu), Sep 01 2008
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STATUS
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approved
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