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A054574 Begin with n-th prime, add its prime divisors (itself), repeat until reach a new prime; sequence gives prime reached. +0
2
23, 11, 17, 23, 47, 41, 53, 59, 71, 89, 167, 113, 269, 131, 167, 191, 179, 227, 239, 263, 251, 239, 251, 269, 293, 431, 311, 359, 383, 383, 383, 479, 479, 419, 449, 881, 2039, 491, 503, 521, 2039, 659, 2039, 743, 593, 599, 839, 743, 683, 911, 701, 719, 1103 (list; graph; listen)
OFFSET

1,1

EXAMPLE

a(5)=47 because starting with the 5th prime, 11: 11+11=22; 22+2+11=35; 35+5+7=47, a prime.

CROSSREFS

Cf. A054575.

Sequence in context: A040509 A033343 A128364 this_sequence A083154 A002549 A070838

Adjacent sequences: A054571 A054572 A054573 this_sequence A054575 A054576 A054577

KEYWORD

easy,nonn

AUTHOR

Enoch Haga (Enokh(AT)comcast.net), Apr 11 2000

EXTENSIONS

Corrected by Jud McCranie (j.mccranie(AT)comcast.net), Jan 04 2001

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Last modified September 6 16:04 EDT 2008. Contains 143483 sequences.


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