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A117638 Numbers n for which the digital root of phi(n) divides n. 0
1, 2, 4, 6, 8, 11, 12, 16, 18, 21, 22, 24, 27, 29, 36, 42, 44, 47, 50, 54, 58, 63, 66, 72, 78, 80, 81, 83, 84, 85, 88, 90, 94, 100, 101, 105, 108, 116, 117, 120, 125, 126, 128, 129, 132, 135, 136, 137, 144, 147, 156, 160, 162, 166, 168, 170, 171, 173, 174, 176, 180 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..60.

EXAMPLE

105 is in the sequence because phi(105)=48 and the digital root of 48 (3) divides 105

CROSSREFS

Cf. A000010.

Sequence in context: A187414 A187348 A081499 * A128403 A205556 A051244

Adjacent sequences:  A117635 A117636 A117637 * A117639 A117640 A117641

KEYWORD

nonn,base

AUTHOR

Luc Stevens (lms022(AT)yahoo.com), Apr 09 2006

STATUS

approved

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Last modified December 11 03:18 EST 2016. Contains 279034 sequences.