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Search: id:A132810
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| A132810 |
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Smallest sum of n consecutive odd primes which is a multiple of n. |
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+0
3
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| 8, 15, 36, 395, 72, 119, 240, 2349, 300, 539, 276, 923, 714, 435, 496, 629, 702, 2375, 1120, 1995, 1144, 3979, 3192, 3925, 2938, 9531, 1960, 10063, 2670, 3441, 4448, 5907, 6358, 9835, 4464, 5069, 3610, 13533, 4000, 6273, 4410, 21113, 12012, 8325, 8142
(list; graph; listen)
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OFFSET
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2,1
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FORMULA
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Let A132809(n)=prime(i). Then a(n)= sum(j=i...i+n-1) prime(j). - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Nov 27 2007
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EXAMPLE
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a(5)=395, associated with A132809(5)=71=prime(20) as the first of the 5 consecutive primes, is the smallest sum of 5 consecutive odd primes which is divisible by n=5.
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CROSSREFS
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Cf. A132809 A132811.
Cf. A132809, A132811.
Sequence in context: A083686 A089954 A134020 this_sequence A137658 A118526 A037377
Adjacent sequences: A132807 A132808 A132809 this_sequence A132811 A132812 A132813
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KEYWORD
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easy,nonn
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AUTHOR
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Enoch Haga (Enokh(AT)comcast.net), Sep 01 2007
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EXTENSIONS
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The example does not match the sequence. Also the offset for all of this bunch of sequences should probably be 1. - njas, Sep 13 2007
Edited by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Nov 27 2007
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