A100889 - OEIS

This site is supported by donations to The OEIS Foundation.

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 (list; graph; refs; listen; history; 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) .`
	CROSSREFS	`Cf. A100884, A100885, A100890.` `Sequence in context: A002107 A133099 A006571 * A206828 A094781 A023582` `Adjacent sequences: A100886 A100887 A100888 * A100890 A100891 A100892`
	KEYWORD	`sign,more`
	AUTHOR	`Yasutoshi Kohmoto (zbi74583(AT)boat.zero.ad.jp)`
	EXTENSIONS	`Edited, all values replaced by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Mar 12 2010`

Content is available under The OEIS End-User License Agreement .

Last modified February 17 19:13 EST 2012. Contains 206085 sequences.