id:A057919 - OEIS Search Results

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phi(n) divides phi(n+1), where phi(n) is number of positive integers <= n and relatively prime to n.

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1, 2, 3, 4, 6, 12, 15, 16, 18, 36, 72, 90, 96, 104, 108, 154, 162, 164, 192, 194, 255, 256, 286, 364, 432, 486, 495, 576, 584, 702, 768, 792, 804, 924, 975, 1066, 1152, 1260, 1296, 1458, 2146, 2204, 2592, 2625, 2834, 2916, 3255, 3382, 3456, 3705, 3888 (list; graph; listen)

	OFFSET	`0,2`
	LINKS	`Leroy Quet, Home Page (listed in lieu of email address)`
	EXAMPLE	`6 is included because phi(6) = 2 divides phi(7) = 6.`
	CROSSREFS	`Sequence in context: A034293 A136291 A128393 this_sequence A102250 A084788 A002809` `Adjacent sequences: A057916 A057917 A057918 this_sequence A057920 A057921 A057922`
	KEYWORD	`nonn`
	AUTHOR	`Leroy Quet Nov 11 2000`

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Last modified December 17 23:40 EST 2009. Contains 171025 sequences.

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