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A067234 Numbers n such that phi(4n+1)=sigma(n). 0
56, 476, 2840, 4676, 8120, 9416, 16256, 23940, 25056, 28520, 30566, 32760, 36146, 37716, 39816, 55676, 56306, 65280, 66056, 129260, 135840, 143096, 149960, 155876, 176736, 185240, 198240, 198396, 202676, 232596, 252756, 257312, 296786 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

Are there any odd terms in the sequence?

CROSSREFS

Sequence in context: A008447 A076647 A187159 * A204832 A190536 A190070

Adjacent sequences:  A067231 A067232 A067233 * A067235 A067236 A067237

KEYWORD

nonn

AUTHOR

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

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Last modified February 18 00:14 EST 2012. Contains 206085 sequences.