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Search: id:A093627
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| A093627 |
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LCM (1,2,3,...,n) times sum of Farey fractions of order n. |
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+0
1
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| 1, 3, 15, 42, 330, 390, 3990, 9660, 36540, 41580, 595980, 651420, 10630620, 11711700, 13153140, 29189160, 594233640, 630990360, 14083949880, 15015120120, 16411875480, 17575838280, 463140798120, 484557713640, 2690500012200
(list; graph; listen)
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OFFSET
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1,2
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LINKS
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Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics..
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FORMULA
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A093593/A025527 = A093627.
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MATHEMATICA
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Farey[n_] := Union[ Flatten[ Join[{0}, Table[a/b, {b, n}, {a, b}]]]]; Table[LCM @@ Range[n] Plus @@ Farey[n], {n, 26}]
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CROSSREFS
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Cf. A093593.
Sequence in context: A012222 A069267 A059270 this_sequence A101165 A127407 A112810
Adjacent sequences: A093624 A093625 A093626 this_sequence A093628 A093629 A093630
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KEYWORD
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nonn
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AUTHOR
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Robert G. Wilson v (rgwv(AT)rgwv.com) and Clark Kimberling (ck6(AT)evansville.edu), Apr 06 2004
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