|
Search: id:A006872
|
|
|
| A006872 |
|
phi(n) = phi(sigma(n)).
(Formerly M2984)
|
|
+0
5
|
|
| 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)
|
|
|
OFFSET
|
1,2
|
|
|
REFERENCES
|
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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.
|
|
LINKS
|
T. D. Noe, Table of n, a(n) for n=1..1000
|
|
CROSSREFS
|
Cf. A000010.
Sequence in context: A046280 A046283 A160991 this_sequence A027179 A121250 A105549
Adjacent sequences: A006869 A006870 A006871 this_sequence A006873 A006874 A006875
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Jeffrey Shallit, N. J. A. Sloane (njas(AT)research.att.com).
|
|
EXTENSIONS
|
More terms from Jud McCranie, j.mccranie(AT)comcast.net.
|
|
|
Search completed in 0.002 seconds
|
