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A074495
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a(n) = the first prime > sigma(n).
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0
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2, 5, 5, 11, 7, 13, 11, 17, 17, 19, 13, 29, 17, 29, 29, 37, 19, 41, 23, 43, 37, 37, 29, 61, 37, 43, 41, 59, 31, 73, 37, 67, 53, 59, 53, 97, 41, 61, 59, 97
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OFFSET
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1,1
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LINKS
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Table of n, a(n) for n=1..40.
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EXAMPLE
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The first prime > sigma(6) = 12 is 13, so a(6) = 13.
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MATHEMATICA
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p[n_] := Module[{r, i}, r = 2; i = 1; While[r <= n, i = i + 1; r = Prime[i]]; r]; Table[p[DivisorSigma[1, n]], {n, 1, 40}]
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CROSSREFS
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Sequence in context: A184443 A132295 A086651 * A081467 A194119 A084721
Adjacent sequences: A074492 A074493 A074494 * A074496 A074497 A074498
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KEYWORD
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easy,nonn
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AUTHOR
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Joseph L. Pe (joseph_l_pe(AT)hotmail.com), Sep 26 2002
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STATUS
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approved
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