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Search: id:A130502
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| A130502 |
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a(n) = numerator of the sum of reciprocals of those positive integers which are <= n and are not among earlier terms of A130502. |
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+0
2
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| 1, 1, 5, 13, 13, 5, 39, 85, 821, 4357, 50447, 52757, 52757, 54737, 11317, 23327, 407647, 139373, 2710919, 13853047, 4712429, 4802869, 112455667, 343087331, 1742894239, 23000844907, 209982175763, 212850512663, 6252978300427
(list; graph; listen)
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OFFSET
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1,3
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LINKS
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Diana Mecum, Table of n, a(n) for n = 1..100
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EXAMPLE
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The positive integers which are <= 9 and are missing from the first 8 terms of this (numerator) sequence are 2,3,4,6,7,8,9. So a(9) is the numerator of (1/2 +1/3 +1/4 +1/6 +1/7 +1/8 + 1/9 = 821/504).
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CROSSREFS
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Cf. A130503.
Sequence in context: A089534 A116981 A094150 this_sequence A051899 A085956 A134202
Adjacent sequences: A130499 A130500 A130501 this_sequence A130503 A130504 A130505
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KEYWORD
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frac,nonn
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AUTHOR
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Leroy Quet (q1qq2qqq3qqqq(AT)yahoo.com), May 31 2007
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EXTENSIONS
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More terms from Diana Mecum (diana.mecum(AT)gmail.com), May 29 2007
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