id:A069081 - OEIS Search Results

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Numbers n such that sigma(n)/tau(n) has denominator 2.

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2, 10, 18, 24, 26, 32, 34, 50, 58, 74, 82, 88, 90, 98, 106, 120, 122, 130, 146, 152, 160, 170, 178, 194, 202, 216, 218, 226, 234, 242, 250, 274, 288, 290, 298, 306, 312, 314, 338, 344, 346, 362, 370, 386, 394, 408, 410, 416, 440, 442, 458, 466, 472, 482, 490 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`n such that A057021(n)=2`
	CROSSREFS	`Sequence in context: A077247 A082939 A074069 this_sequence A126005 A017089 A097269` `Adjacent sequences: A069078 A069079 A069080 this_sequence A069082 A069083 A069084`
	KEYWORD	`easy,nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Apr 05 2002`

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Last modified November 24 14:25 EST 2009. Contains 167438 sequences.

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