id:A074693 - OEIS Search Results

Search: id:A074693

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a(1)=1, a(n)=a(n-1)+phi(a(n-1)).

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2

1, 2, 3, 5, 9, 15, 23, 45, 69, 113, 225, 345, 521, 1041, 1733, 3465, 4905, 7497, 11529, 18009, 29097, 47817, 71577, 114777, 184761, 307881, 482841, 804573, 1212813, 1854333, 2993517, 4953069, 7752429, 12826269, 21376953, 34207353, 55027593 (list; graph; listen)

	OFFSET	`1,2`
	LINKS	`T. D. Noe, Table of n, a(n) for n=1..300`
	FORMULA	`1 < a(n+1)/a(n) <= 2 . Does limit a(n+1)/a(n) exist ?`
	CROSSREFS	`Sequence in context: A101461 A085897 A067798 this_sequence A097083 A003476 A017989` `Adjacent sequences: A074690 A074691 A074692 this_sequence A074694 A074695 A074696`
	KEYWORD	`easy,nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Sep 03 2002`

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Last modified September 5 19:27 EDT 2008. Contains 143485 sequences.

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