id:A067719 - OEIS Search Results

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Numbers n such that sigma(n^2+1)==0 (mod n).

+0
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1, 2, 3, 9, 12, 21, 33, 72, 93, 196, 228, 252, 360, 475, 850, 1458, 1725, 1752, 2100, 2241, 2584, 3007, 3404, 4347, 4743, 5544, 5720, 6555, 6600, 9909, 10512, 14175, 15507, 16680, 19404, 26460, 29008, 29484, 36003, 36400, 37107, 46728 (list; graph; listen)

	OFFSET	`1,2`
	CROSSREFS	`Sequence in context: A088086 A088084 A048084 this_sequence A057017 A047162 A155929` `Adjacent sequences: A067716 A067717 A067718 this_sequence A067720 A067721 A067722`
	KEYWORD	`nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Feb 05 2002`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research