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A029870
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Number of connected functions on n points with a loop of length 7.
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2
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1, 1, 5, 21, 80, 285, 970, 3192, 10236, 32197, 99743, 305276, 925342, 2783012, 8316994, 24726109, 73195582, 215911767, 635028054, 1863156727, 5455350409, 15946267328, 46545783253, 135702643984, 395246786050, 1150250414764, 3345193851398, 9723141517918
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OFFSET
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7,3
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LINKS
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FORMULA
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"CIK[ 7 ]" (necklace, indistinct, unlabeled, 7 parts) transform of A000081.
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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