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

 

Logo

Annual Appeal: Today, Nov 11 2014, is the 4th anniversary of the launch of the new OEIS web site. 70,000 sequences have been added in these four years, all edited by volunteers. Please make a donation (tax deductible in the US) to help keep the OEIS running.

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 November 27 02:34 EST 2014. Contains 250152 sequences.