id:A066812 - OEIS Search Results

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a(n) is such that phi(a(n)+1)=phi(a(n)-1)

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5, 8, 9, 11, 27, 33, 71, 75, 123, 147, 309, 315, 387, 513, 555, 573, 627, 636, 729, 795, 843, 911, 915, 1016, 1083, 1227, 1323, 1331, 1347, 1467, 1515, 1609, 1755, 1995, 2133, 2171, 2187, 2307, 2403, 2427, 2475, 2591, 2643, 2696, 2763, 2907, 3243, 3315 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`a(n) is even for n=2,18,24,44,67 while a(n) is odd for other values of n < 85.`
	FORMULA	`Conjecture : there is a constant 2 < c < 2.1 such that a(n)=n^c asymptotically.`
	CROSSREFS	`A001494(n) + 1.` `Sequence in context: A021633 A165991 A101079 this_sequence A100832 A034812 A066467` `Adjacent sequences: A066809 A066810 A066811 this_sequence A066813 A066814 A066815`
	KEYWORD	`nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Jan 20 2002`
	EXTENSIONS	`Corrected by Ralf Stephan, Feb 20 2004`

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Last modified December 17 19:39 EST 2009. Contains 170821 sequences.

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