login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A126104 Numbers n not divisible by 6 such that sigma(n) > 3n. 2

%I #11 Dec 04 2019 11:11:38

%S 40040,61600,72800,80080,104720,117040,123200,123760,138320,141680,

%T 145600,154000,160160,172480,200200,209440,215600,234080,246400,

%U 247520,254800,261800,276640,280280,283360,291200,292600,308000

%N Numbers n not divisible by 6 such that sigma(n) > 3n.

%H Amiram Eldar, <a href="/A126104/b126104.txt">Table of n, a(n) for n = 1..10000</a>

%t Select[Range[310000], Mod[#, 6] > 1 && DivisorSigma[1, #] > 3# &] (* _Amiram Eldar_, Dec 03 2019 *)

%Y Intersection of A047253 and A068403.

%K nonn

%O 1,1

%A _Ant King_, Mar 07 2007

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 25 10:01 EDT 2024. Contains 371967 sequences. (Running on oeis4.)