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

 

Logo

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 59th year, we have over 358,000 sequences, and we’ve crossed 10,300 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A174865 Odd abundant numbers whose abundance is even. 2
945, 1575, 2205, 2835, 3465, 4095, 4725, 5355, 5775, 5985, 6435, 6615, 6825, 7245, 7425, 7875, 8085, 8415, 8505, 8925, 9135, 9555, 9765, 10395, 11655, 12285, 12705, 12915, 13545, 14175, 14805, 15015, 15435, 16065, 16695, 17325, 17955, 18585 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

This is a subsequence of the odd abundant numbers, A005231. The first term in A005231 but not in this sequence is 11025.

LINKS

Amiram Eldar, Table of n, a(n) for n = 1..10000 (terms 1..1989 from T. D. Noe)

MATHEMATICA

goodQ[n_] := Module[{ds=DivisorSigma[1, n]}, ds>2n && EvenQ[ds]]; Select[Range[1, 1000000, 2], goodQ]

CROSSREFS

Cf. A156942 (Odd abundant numbers whose abundance is odd).

Cf. A005231, A033880.

Sequence in context: A252192 A252185 A005231 * A174535 A243104 A006038

Adjacent sequences: A174862 A174863 A174864 * A174866 A174867 A174868

KEYWORD

nonn

AUTHOR

T. D. Noe, Mar 31 2010

STATUS

approved

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 December 7 22:27 EST 2022. Contains 358671 sequences. (Running on oeis4.)