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Search: id:A031157
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| A031157 |
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Numbers that are both lucky and prime. |
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+0
9
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| 3, 7, 13, 31, 37, 43, 67, 73, 79, 127, 151, 163, 193, 211, 223, 241, 283, 307, 331, 349, 367, 409, 421, 433, 463, 487, 541, 577, 601, 613, 619, 631, 643, 673, 727, 739, 769, 787, 823, 883, 937, 991, 997, 1009, 1021, 1039, 1087, 1093, 1117, 1123
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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A010051(a(n))*A145649(a(n)) = 1. [From Reinhard Zumkeller (renhard.zumkeller(AT)gmail.com), Oct 19 2008]
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LINKS
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Wikipedia, Lucky prime
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MATHEMATICA
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lst = Range[1, 1248, 2]; i = 2; While[ i <= (len = Length@lst) && (k = lst[[i]]) <= len, lst = Drop[lst, {k, len, k}]; i++ ]; Select[lst, PrimeQ@# &] (from Robert G. Wilson v (rgwv(at)rgwv.com), May 12 2006)
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CROSSREFS
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Cf. A000959.
Sequence in context: A062700 A136060 A023227 this_sequence A049488 A136051 A100750
Adjacent sequences: A031154 A031155 A031156 this_sequence A031158 A031159 A031160
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KEYWORD
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nonn
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AUTHOR
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Patrick De Geest (pdg(AT)worldofnumbers.com)
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