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A163164 Positions n such that A163163(n) is not prime. 0
1, 4, 6, 10, 12, 14, 16, 18, 20, 21, 22, 24, 25, 26, 28, 30, 34, 36, 38, 39, 40, 42, 44, 45, 46, 48, 50, 51, 52, 54, 55, 56, 57, 58, 60, 62, 64, 66, 68, 70, 72, 74, 75, 76, 78, 80, 81, 82, 84, 85, 86, 88, 90, 91, 92, 93, 94, 96, 99, 100, 102, 104, 105, 106, 108, 110, 111, 112, 114, 115 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..70.

EXAMPLE

a(1)=1 because A163163(1)=1 is not prime. a(2)=4 because A163163(4)=6 is not prime.

CROSSREFS

Cf. A000005, A000203, A007503, A163163.

Sequence in context: A174240 A287342 A309177 * A120351 A137230 A283564

Adjacent sequences:  A163161 A163162 A163163 * A163165 A163166 A163167

KEYWORD

nonn,easy

AUTHOR

Juri-Stepan Gerasimov, Jul 22 2009

EXTENSIONS

33 removed by R. J. Mathar, Jul 25 2009

STATUS

approved

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Last modified July 17 14:44 EDT 2019. Contains 325106 sequences. (Running on oeis4.)