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A039654 Prime reached by iterating f(x) = sigma(x)-1 on n. +0
1
2, 3, 11, 5, 11, 7, 23, 71, 17, 11, 71, 13, 23, 23, 71, 17, 59, 19, 41, 31, 47, 23, 59, 71, 41, 71, 71, 29, 71, 31, 167, 47, 53, 47, 233, 37, 59, 71, 89, 41, 167, 43, 83, 167, 71, 47, 167, 167, 167, 71, 97, 53, 167, 71, 167, 79, 89, 59, 167, 61, 167, 103, 311, 83, 167, 67 (list; graph; listen)
OFFSET

2,1

CROSSREFS

Cf. A039649-A039656.

Sequence in context: A031335 A084743 A030391 this_sequence A075240 A137332 A084047

Adjacent sequences: A039651 A039652 A039653 this_sequence A039655 A039656 A039657

KEYWORD

nonn

AUTHOR

David W. Wilson (davidwwilson(AT)comcast.net)

page 1

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


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