id:A140863 - OEIS Search Results

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Odd numbers k such that sigma(m)=2m+k has a solution in m.(sigma is the sum-of-divisors function A000203).

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3, 7, 17, 19, 31, 39, 41, 51, 59, 65, 71, 89, 115, 119, 127, 161, 185, 199, 215, 243, 251, 259, 265, 269, 299, 309, 353, 363, 399, 401, 455, 459, 467, 499, 519, 593, 635, 713, 737, 815, 831, 845, 899, 921, 923, 965, 967, 983, 1011, 1021, 1025, 1049, 1053, 1055 (list; graph; listen)

	OFFSET	`1,1`
	REFERENCES	`J.-M. De Koninck, Ces nombres qui nous fascinent, Entry 196, pp 58, Ellipses, Paris 2008.`
	CROSSREFS	`Sequence in context: A000963 A133593 A087749 this_sequence A076194 A064699 A113304` `Adjacent sequences: A140860 A140861 A140862 this_sequence A140864 A140865 A140866`
	KEYWORD	`nonn`
	AUTHOR	`Lekraj Beedassy (blekraj(AT)yahoo.com), Jul 20 2008`
	EXTENSIONS	`a(13)-a(54) from Donovan Johnson (donovan.johnson(AT)yahoo.com), Dec 09 2008`

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

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