The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A126106 Record values in A092693 = sum of iterated phi(n). 3

%I #4 Mar 30 2012 17:31:21

%S 0,1,3,7,9,17,19,31,39,47,55,71,85,91,105,109,111,117,153,159,171,197,

%T 209,263,319,337,417,423,511,527,551,641,695,707,761,767,779,889,923,

%U 991,1001,1007,1101,1151,1413,1495,1515,1647,1695,1711,1719,1739,1889

%N Record values in A092693 = sum of iterated phi(n).

%H T. D. Noe, <a href="/A126106/b126106.txt">Table of n, a(n) for n = 1..1000</a>

%t lst = {}; mim = -1; Do[a = Plus @@ FixedPointList[EulerPhi, n] - n - 1; If[a > mim, mim = a; AppendTo[lst, a]], {n, 1100}]; lst

%Y Cf. A092693.

%K nonn

%O 1,3

%A _Robert G. Wilson v_, Feb 20 2007

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified June 8 13:51 EDT 2024. Contains 373217 sequences. (Running on oeis4.)