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A109218 Numbers k such that A109217(k) is prime. 1
3, 23, 28, 34, 47, 86, 92, 107, 632, 723, 754, 772 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..12.

EXAMPLE

a(2) = 23 because A109217(23) = 1101111011111101111111 is prime.

CROSSREFS

Cf. A000037, A109217.

Sequence in context: A153707 A232327 A153708 * A103361 A136090 A032688

Adjacent sequences:  A109215 A109216 A109217 * A109219 A109220 A109221

KEYWORD

nonn,more

AUTHOR

Jason Earls, Jun 22 2005

EXTENSIONS

Terms corrected by Jinyuan Wang, Mar 22 2020

STATUS

approved

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Last modified July 25 03:36 EDT 2021. Contains 346282 sequences. (Running on oeis4.)