id:A066971 - OEIS Search Results

Search: id:A066971

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a(n) = sigma(sigma(sigma(n))).

+0
3

1, 7, 8, 15, 28, 56, 24, 60, 24, 56, 56, 120, 60, 168, 168, 63, 56, 120, 96, 252, 104, 112, 168, 480, 63, 252, 234, 360, 195, 336, 104, 210, 224, 360, 224, 248, 168, 480, 360, 546, 252, 728, 224, 504, 480, 336, 224, 504, 186, 255, 336, 260, 360, 1170, 336, 1170 (list; graph; listen)

	OFFSET	`1,2`
	PROGRAM	`(PARI) for(n=1, 100, print1(sigma(sigma(sigma(n))), ", ")) (Lambert Klasen)`
	CROSSREFS	`Sequence in context: A041693 A042001 A020690 this_sequence A084377 A041675 A041098` `Adjacent sequences: A066968 A066969 A066970 this_sequence A066972 A066973 A066974`
	KEYWORD	`nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Jan 26 2002`

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

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