id:A056772 - OEIS Search Results

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phi(n+4) = phi(n) + 4.

+0
1

3, 7, 12, 13, 18, 19, 24, 28, 36, 37, 40, 43, 66, 67, 79, 88, 97, 103, 109, 124, 127, 163, 184, 193, 223, 229, 232, 277, 307, 313, 328, 349, 379, 397, 424, 439, 457, 463, 487, 499, 508, 613, 643, 664, 673, 712, 739, 757, 769, 823, 853, 859, 877, 883, 904, 907 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`In contrast with A015913, composite solutions are not rare. Prime solutions are common.`
	EXAMPLE	`n=1048, Phi[1048]=520, Phi[1048+4]=524`
	CROSSREFS	`A001838, A015913.` `Sequence in context: A057992 A082600 A057927 this_sequence A024614 A045134 A081695` `Adjacent sequences: A056769 A056770 A056771 this_sequence A056773 A056774 A056775`
	KEYWORD	`nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu), Aug 17 2000`

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.

AT&T Labs Research