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Search: id:A071526
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| A071526 |
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Numbers n such that (k reduced mod phi(k)) < (n reduced mod phi(n)) for any k<n. |
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+0
1
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| 1, 3, 9, 15, 21, 33, 39, 45, 63, 75, 99, 117, 135, 189, 225, 231, 255, 273, 285, 345, 375, 399, 405, 435, 465, 555, 609, 615, 645, 675, 693, 705, 765, 819, 855, 915, 1005, 1035, 1095, 1125, 1185, 1215, 1245, 1275, 1395, 1425, 1515, 1545, 1605, 1617, 1665, 1725
(list; graph; listen)
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OFFSET
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1,2
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PROGRAM
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(PARI) for(n=1, 2000, if(sum(i=1, n-1, sign(n%eulerphi(n)-i%eulerphi(i)))==n-1, print1(n, ", ")))
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CROSSREFS
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Adjacent sequences: A071523 A071524 A071525 this_sequence A071527 A071528 A071529
Sequence in context: A110108 A102954 A067201 this_sequence A114271 A137164 A108701
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KEYWORD
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easy,nonn
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AUTHOR
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Benoit Cloitre (benoit7848c(AT)orange.fr), Jun 02 2002
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