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A139766 A number n is included in the sequence if and only if the n-th integer from among those positive integers which are coprime to n+1 = the (n+1)-st integer from among those positive integers which are coprime to n. 0
3, 15, 104, 164, 255, 2625, 2834, 11715, 18315, 48704, 49215, 64004, 65535, 73124, 131144, 215775, 491535, 525986, 546272, 568815, 952575, 1925564, 5781434, 5861583, 13496384, 14409548, 17646615, 17949434, 20171384, 21475124, 22632285 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
So far it appears that this is a proper subset of A001274.
LINKS
FORMULA
Indices n such that A126356(n) = A126357(n). - Ray Chandler
CROSSREFS
Sequence in context: A358738 A331689 A001274 * A003276 A136092 A338724
KEYWORD
nonn
AUTHOR
Leroy Quet, Nov 07 2007
EXTENSIONS
More terms from Stefan Steinerberger, Nov 07 2007
a(8) onwards from Ray Chandler, Jul 01 2009
STATUS
approved

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Last modified March 4 16:59 EST 2024. Contains 370532 sequences. (Running on oeis4.)