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Search: id:A006872
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| A006872 |
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phi(n) = phi(sigma(n)).
(Formerly M2984)
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+0
5
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| 1, 3, 15, 26, 39, 45, 74, 104, 111, 117, 122, 146, 175, 183, 195, 219, 296, 314, 333, 357, 386, 471, 488, 549, 554, 555, 579, 584, 585, 608, 626, 646, 657, 794, 831, 842, 914, 915, 939, 962, 1071, 1082, 1095, 1191, 1226, 1256, 1263, 1292, 1322, 1346
(list; graph; listen)
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OFFSET
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1,2
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REFERENCES
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S. W. Golomb, Equality among number-theoretic functions, Abstract 882-11-16, Abstracts Amer. Math. Soc., 14 (1993), 415-416.
R. K. Guy, Unsolved Problems in Number Theory, B42.
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LINKS
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T. D. Noe, Table of n, a(n) for n=1..1000
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CROSSREFS
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Cf. A000010.
Adjacent sequences: A006869 A006870 A006871 this_sequence A006873 A006874 A006875
Sequence in context: A018982 A046280 A046283 this_sequence A027179 A121250 A105549
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KEYWORD
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nonn
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AUTHOR
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Jeffrey Shallit, njas
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EXTENSIONS
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More terms from Jud McCranie, j.mccranie(AT)comcast.net.
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