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A067795 Numbers n such that 2n+1 is the next prime after sigma(n). +0
1
6, 8, 14, 44, 128, 315, 2144, 32768 (list; graph; listen)
OFFSET

1,1
CROSSREFS

Sequence in context: A101084 A108935 A108028 this_sequence A066160 A100914 A076672

Adjacent sequences: A067792 A067793 A067794 this_sequence A067796 A067797 A067798

KEYWORD

nonn

AUTHOR

Benoit Cloitre (benoit7848c(AT)orange.fr), Feb 07 2002

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

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