id:A086666 - OEIS Search Results

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sigma_2(n)-sigma(n).

+0
1

0, 2, 6, 14, 20, 38, 42, 70, 78, 112, 110, 182, 156, 226, 236, 310, 272, 416, 342, 504, 468, 574, 506, 790, 620, 808, 780, 994, 812, 1228, 930, 1302, 1172, 1396, 1252, 1820, 1332, 1750, 1644, 2120, 1640, 2404, 1806, 2478, 2288, 2578, 2162, 3286, 2394, 3162 (list; graph; listen)

	OFFSET	`1,2`
	PROGRAM	`(PARI) for (n=2, 50, print1(sigma(n, 2)-sigma(n, 1)", "))`
	CROSSREFS	`Cf. A000203, A001157.` `Sequence in context: A107369 A151731 A009779 this_sequence A032383 A014775 A009218` `Adjacent sequences: A086663 A086664 A086665 this_sequence A086667 A086668 A086669`
	KEYWORD	`nonn`
	AUTHOR	`Jon Perry (perry(AT)globalnet.co.uk), Jul 27 2003`

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Last modified December 8 08:31 EST 2009. Contains 170430 sequences.

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