login
This site is supported by donations to The OEIS Foundation.

 

Logo

Annual Appeal: Please make a donation to keep the OEIS running. In 2018 we replaced the server with a faster one, added 20000 new sequences, and reached 7000 citations (often saying "discovered thanks to the OEIS").
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A100766 Numbers n for which the values of the Moebius function (A008683) and the Mertens function (A002321) are both 0. 4
40, 150, 160, 164, 232, 236, 332, 333, 356, 363, 364, 404, 405, 408, 414, 420, 423, 424, 425, 428, 608, 636, 637, 796, 812, 824, 825, 850, 884, 896, 904, 916, 920, 1014, 1220, 1256, 1280, 1292, 1300, 1336, 1492, 1519, 1520, 1521, 1524, 1525, 1528, 1532, 1544 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

This sequence is a subset of A100306, Numbers n for which the values of the Moebius function and the Mertens function agree and, in a different way, a subset of A028442, zeros of the Mertens function. There are no prime numbers in this sequence.

LINKS

Donovan Johnson, Table of n, a(n) for n = 1..10000

PrimeFan, Esoteric Integer Sequences

MATHEMATICA

(* If not already defined *) If[Names["Mertens"] == {}, Mertens[x_] := Plus @@ MoebiusMu[Range[1, x]]]; Select[Range[2500], MoebiusMu[ # ] == 0 && Mertens[ # ] == 0 &]

CROSSREFS

Cf. A100306, A100765, A100767.

Sequence in context: A160148 A233733 A233726 * A189541 A201233 A135848

Adjacent sequences:  A100763 A100764 A100765 * A100767 A100768 A100769

KEYWORD

nonn

AUTHOR

Alonso del Arte, Jan 03 2005

EXTENSIONS

Offset corrected by Donovan Johnson, Jun 19 2012

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified December 19 11:23 EST 2018. Contains 318246 sequences. (Running on oeis4.)