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!)
A029914 Start with n; repeatedly sum squares of prime factors (counted with multiplicity), until reach a prime p, then set a(n) = p; if reach a fixed point q, set a(n) = q; set a(n) = 0 if no limit exists. 1
2, 3, 17, 5, 13, 7, 17, 59, 29, 11, 17, 13, 53, 293, 16, 17, 16, 19, 16, 16, 16, 23, 16, 16, 16, 16, 16, 29, 16, 31, 16, 16, 16, 16, 16, 37, 16, 16, 16, 41, 16, 43, 16, 16, 16, 47, 16, 16, 16, 16, 16, 53, 16, 16, 16, 16, 16, 59, 16, 61, 16, 16, 16, 16, 16, 67, 16, 16, 16, 71 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,1

LINKS

Table of n, a(n) for n=2..71.

EXAMPLE

2 -> 2^2=4 -> 2^2+2^2=8 -> 2^2+2^2+2^12=12 -> 2^2+2^2+3^2=17, prime, so stop; a(2)=17.

CROSSREFS

Cf. A029913.

Sequence in context: A103898 A140383 A029913 * A073125 A171240 A078201

Adjacent sequences:  A029911 A029912 A029913 * A029915 A029916 A029917

KEYWORD

nonn

AUTHOR

Dann Toliver

EXTENSIONS

More terms from Michel ten Voorde (seqfan(AT)tenvoorde.org) Apr 12 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 December 19 20:35 EST 2014. Contains 252239 sequences.