A063667 - OEIS

This site is supported by donations to The OEIS Foundation.

A063667

Number of solutions of EulerPhi[x]=12n+2.

0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,9`
	EXAMPLE	`Among the first 10000 cases only 16 invphi(12j+2) set are non-empty, always with 2 terms. E.g. n=8034, a(8034)=2 because 12*8034+2=96410 and invphi(96410)={96721,193442}.`
	MAPLE	`with(numtheory): [seq(nops(invphi(2+12*j)), j=1..10000)];`
	CROSSREFS	`A000010, A005277, A002202.` `Sequence in context: A130779 A130706 A000038 * A014083 A112315 A005926` `Adjacent sequences: A063664 A063665 A063666 * A063668 A063669 A063670`
	KEYWORD	`nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu), Aug 22 2001`

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

Last modified February 13 20:37 EST 2012. Contains 205554 sequences.