login
This site is supported by donations to The OEIS Foundation.

 

Logo

110 people attended OEIS-50 (videos, suggestions); annual fundraising drive to start soon (donate); editors, please edit! (stack is over 300), your editing is more valuable than any donation.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A063702 Composite solutions to Phi[x+d[x]] = Phi[x]+d[x], where Phi[] = A000010(), d[] = A000005(). 1
24, 42, 56, 98, 102, 230, 248, 264, 294, 468, 638, 1014, 1016, 1078, 2006, 8366, 10344, 11914, 11918, 13158, 15694, 19942, 23318, 24734, 33496, 39348, 57352, 65528, 79826, 119799, 176606, 176874, 199048, 200152, 236006, 236174, 236530 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Harry J. Smith, Table of n, a(n) for n=1,...,100

PROG

(PARI) { n=0; for (x=1, 10^9, if (eulerphi(x + numdiv(x)) == (eulerphi(x) + numdiv(x)) && !isprime(x), write("b063702.txt", n++, " ", x); if (n==100, break)) ) } [From Harry J. Smith, Aug 28 2009]

CROSSREFS

A000005, A000010.

Sequence in context: A098900 A098769 A162886 * A074975 A077095 A228844

Adjacent sequences:  A063699 A063700 A063701 * A063703 A063704 A063705

KEYWORD

nonn

AUTHOR

Labos Elemer, Aug 23 2001

EXTENSIONS

More terms from Dean Hickerson, Aug 24, 2001

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified October 31 10:33 EDT 2014. Contains 248861 sequences.