A054905 - OEIS

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A054905

Smallest composite x such that sigma(x) + 2n = sigma(x + 2n).

434, 305635357, 104, 27, 195556, 65, 12, 39, 20, 56, 916, 80, 212282, 57, 44, 106645, 52, 125 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	EXAMPLE	`a(5) corresponds to n=3+2=5, d=2n=10 and the smallest composite integer is 195556. The next solution is 1152136225.`
	CROSSREFS	`Cf. A015913-A015917, A054799, A023200-A023203,` `Sequence in context: A050507 A145318 A054987 * A160353 A124043 A190828` `Adjacent sequences: A054902 A054903 A054904 * A054906 A054907 A054908`
	KEYWORD	`nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu) May 23 2000`
	EXTENSIONS	`Description corrected by Jud McCranie (JudMcCranie(AT)ugaalum.uga.edu), May 25 2000` `a(19)>4293000000, if it exists - Jud McCranie.`

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Last modified February 14 18:02 EST 2012. Contains 205661 sequences.