id:A053288 - OEIS Search Results

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Cototient of 2^n-1.

+0
1

0, 1, 1, 7, 1, 27, 1, 127, 79, 423, 111, 2367, 1, 5799, 5767, 32767, 1, 122175, 1, 568575, 319039, 1553599, 178527, 10141695, 1154431, 22391463, 20750335, 135669759, 3044479, 539141823, 1, 2147483647, 1626398143, 5726972583 (list; graph; listen)

	OFFSET	`1,4`
	FORMULA	`a(n)=A051593[A000225(n)]`
	CROSSREFS	`Cf. A000010, A000225, A051953.` `Sequence in context: A019431 A064051 A082172 this_sequence A050301 A083994 A084181` `Adjacent sequences: A053285 A053286 A053287 this_sequence A053289 A053290 A053291`
	KEYWORD	`nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu), Mar 03 2000`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

AT&T Labs Research