login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A100885 Imaginary part of the Gaussian multiperfect number associated with the real part A100884. 6
0, 3, 2, 5, 10, 18, 12, 24, 88, 20, 84, 120, 32, 60, 209, 440, 418, 120, 950, 768, 310, 200, 1280, 1152, 2256, 3800, 600, 404, 3840, 1712, 1240, 4680, 5016, 6240, 11400, 12880, 1212, 3720, 20012, 1232, 61440 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..41.

EXAMPLE

a(1) = Im(z= 1) with sigma(z) = 1 and m = 1.

a(2) = Im(z= 1+3i) with sigma(z) = 5+5i and m = 2-i.

a(3) = Im(z= 6+2i) with sigma(z) = -10-10i and m = -1+2i.

a(4) = Im(z= 5+5i) with sigma(z) = 20i and m = 2+2i.

a(5) = Im(z= 10+10i) with sigma(z) = -40+20i and m = -1+3i.

a(6) = Im(z= 12+18i) with sigma(z) = -12+60i and m = 2+2i.

a(9) = Im(z= 28+88i) with sigma(z) = -204-32i and m = -1+2i.

CROSSREFS

Cf. A100884, A100889, A100890.

Sequence in context: A128914 A050063 A274761 * A209199 A215328 A107298

Adjacent sequences:  A100882 A100883 A100884 * A100886 A100887 A100888

KEYWORD

nonn,more

AUTHOR

Yasutoshi Kohmoto

EXTENSIONS

Edited, all values replaced by R. J. Mathar, Mar 12 2010

a(10)-a(41) from Amiram Eldar, Feb 10 2020

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 May 6 21:25 EDT 2021. Contains 343597 sequences. (Running on oeis4.)