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Search: id:A067230
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A067230 Numbers n such that phi(2n-1)=sigma(n). +0
1
1, 3, 5, 10, 11, 23, 33, 46, 65, 77, 123, 136, 221, 371, 383, 423, 483, 513, 545, 670, 753, 1643, 2033, 3838, 3885, 4533, 4798, 5177, 7463, 7739, 8201, 8985, 9010, 9393, 12256, 13144, 14104, 17110, 17147, 17663, 18695, 19817, 21119, 23038, 24695 (list; graph; listen)
OFFSET

1,2

CROSSREFS

Sequence in context: A113858 A101130 A102309 this_sequence A075741 A119133 A047389

Adjacent sequences: A067227 A067228 A067229 this_sequence A067231 A067232 A067233

KEYWORD

nonn

AUTHOR

Benoit Cloitre (benoit7848c(AT)orange.fr), Feb 20 2002

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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