id:A103229 - OEIS Search Results

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Imaginary part of the sum of divisors function sigma(n) generalized for Gaussian integers. See A103228 for the real part and A103230 for the norm.

+0
3

0, 3, 0, 5, 8, 12, 0, -7, 0, 28, 0, 20, 18, 24, 32, -15, 22, 39, 0, -12, 0, 36, 0, -28, 31, 54, 0, 40, 36, 112, 0, 33, 0, 62, 64, 65, 44, 60, 72, -92, 50, 96, 0, 60, 104, 72, 0, -60, 0, -46, 88, -42, 62, 120, 96, -56, 0, 96, 0, -48, 72, 96, 0, 65, 120, 144, 0, -58, 0, 224, 0, -91, 84, 112, 124, 100, 0, 216, 0, 68, 0, 130, 0, 160, 136 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`See A102506 for a complete description.`
	MATHEMATICA	`Im[Table[DivisorSigma[1, n, GaussianIntegers -> True], {n, 100}]]`
	CROSSREFS	`Sequence in context: A061035 A021331 A013673 this_sequence A076296 A143280 A088521` `Adjacent sequences: A103226 A103227 A103228 this_sequence A103230 A103231 A103232`
	KEYWORD	`sign`
	AUTHOR	`T. D. Noe (noe(AT)sspectra.com), Jan 26 2005`

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

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