A100889 - OEIS

A100889

Real part of the multiplier m of the multiperfect Gaussian integer A100884(n)+i*A100885(n).

1, 2, -1, 2, -1, 2, -2, 1, -1, 0, -3, 1, -3, 0, -2, -4, -3, 1, -4, 2, 0, 3, 0, 1, 3, 3, 4, 3, 0, -1, 0, 5, 3, -5, 4, 0, 4, 0, 0, 0, -4

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

Let the Gaussian integer z = A100884(n)+i*A100885(n). Then a(n) = Re(m) = Re( sigma(z)/z) .

LINKS

CROSSREFS

KEYWORD

sign,more

AUTHOR

EXTENSIONS

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

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

STATUS

approved