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A067829
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Primes n such that sigma(n-2) < n.
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6
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3, 5, 7, 13, 19, 31, 43, 61, 73, 103, 109, 139, 151, 181, 193, 199, 229, 241, 271, 283, 313, 349, 421, 433, 463, 523, 571, 601, 619, 643, 661, 811, 823, 829, 859, 883, 1021, 1033, 1051, 1063, 1093, 1153, 1231, 1279, 1291, 1303, 1321, 1429, 1453, 1483, 1489
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| Also, apart from the first term, greater members of twin prime pairs: A006512(n)=a(n+1). - Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Dec 07 2002
Or, primes p such that either p-3/2+-1/2 is prime. [From Juri-Stepan Gerasimov (2stepan(AT)rambler.ru), Jan 24 2010]
Smallest prime>n-th odd number that are the difference of 2 primes. [From Juri-Stepan Gerasimov (2stepan(AT)rambler.ru), Nov 08 2010]
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CROSSREFS
| Cf. A025584, A001359, A006512, A000203.
Sequence in context: A111703 A184248 A206023 * A084696 A093326 A154700
Adjacent sequences: A067826 A067827 A067828 * A067830 A067831 A067832
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KEYWORD
| nonn
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AUTHOR
| Benoit Cloitre (benoit7848c(AT)orange.fr), Feb 08 2002
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