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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

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Last modified September 1 19:17 EDT 2014. Contains 246317 sequences.