A131825 - OEIS

This site is supported by donations to The OEIS Foundation.

A131825

Numbers n such that cototient(x) = n has exactly 1 solution.

0, 2, 3, 5, 6, 14, 18, 20, 22, 28, 38, 40, 42, 62, 66, 68, 74, 76, 78, 82, 98, 102, 104, 106, 114, 124, 126, 136, 148, 156, 178, 194, 196, 200, 204, 208, 226, 242, 246, 248 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	EXAMPLE	`6 = cototient(10) and for all x<>10, cototient(x) <> 6.`
	CROSSREFS	`Cf. A051953, A131826.` `Sequence in context: A075371 A057704 A078203 * A079226 A055686 A126250` `Adjacent sequences: A131822 A131823 A131824 * A131826 A131827 A131828`
	KEYWORD	`nonn`
	AUTHOR	`Franz Vrabec (franz.vrabec(AT)aon.at), Jul 19 2007`

Content is available under The OEIS End-User License Agreement .

Last modified February 15 03:14 EST 2012. Contains 205694 sequences.