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A029869
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Number of connected functions on n points with a loop of length 6.
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3
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1, 1, 5, 18, 63, 206, 671, 2087, 6434, 19472, 58375, 173316, 511452, 1500697, 4386021, 12775455, 37118209, 107621858, 311552351, 900775893, 2601887149, 7510011727, 21664873773, 62473966631, 180104101037, 519126161517, 1496177366884, 4312044894059, 12427896986697
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OFFSET
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6,3
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LINKS
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FORMULA
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"CIK[ 6 ]" (necklace, indistinct, unlabeled, 6 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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