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Search: id:A002271
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| A002271 |
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All odd numbers k, 1 < k < n, relatively prime to n are primes. |
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+0
2
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| 2, 3, 4, 5, 6, 7, 8, 9, 12, 15, 18, 21, 24, 30, 45, 105
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Joe Roberts writes that it is an assertion of Cseh that 105 is the last term. This sequence appears to be the same as A141109/2. - T. D. Noe (noe(AT)sspectra.com), Jun 03 2008
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REFERENCES
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J. Roberts, Lure of the Integers, Math. Assoc. America, 1992, p. 219.
L. Cseh, Generalized integers and Bonse's theorem, Studia Univ. Babes-Bolyai Math. 34 (1989), 3-6.
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EXAMPLE
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15 is in this sequence because the odd numbers in [3,13] relatively prime to 15 are 7, 11, and 13, which are all prime.
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CROSSREFS
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Sequence in context: A107743 A116066 A008816 this_sequence A048381 A115569 A064653
Adjacent sequences: A002268 A002269 A002270 this_sequence A002272 A002273 A002274
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KEYWORD
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nonn,fini,full
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AUTHOR
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njas
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