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A168498 The positions of non-single or nonisolated numbers in A000010. 0
1, 2, 11, 15, 16, 17, 20, 22, 23, 24, 25, 29, 30, 32, 33, 34, 35, 37, 39, 40, 41, 44, 45, 46, 47, 48, 50, 51, 52, 53, 55, 56, 57, 58, 59, 60, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 74, 75, 76, 78, 79, 80, 81, 82, 83, 84, 85, 87, 88, 89, 90, 92, 94, 96, 97, 100, 101, 102, 104 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Numbers n such that phi(n)=non-single or nonisolated number.

LINKS

Table of n, a(n) for n=1..69.

CROSSREFS

Cf. A000010, A167707.

Sequence in context: A283930 A034039 A077475 * A255370 A061845 A297836

Adjacent sequences:  A168495 A168496 A168497 * A168499 A168500 A168501

KEYWORD

nonn

AUTHOR

Juri-Stepan Gerasimov, Nov 27 2009

EXTENSIONS

Extended by R. J. Mathar, Nov 30 2009

STATUS

approved

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Last modified June 4 11:32 EDT 2020. Contains 334825 sequences. (Running on oeis4.)