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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, 9976, 21116
OFFSET
1,1
EXAMPLE
a(2) = 23 because A109217(23) = 1101111011111101111111 is prime.
CROSSREFS
Sequence in context: A153707 A232327 A153708 * A103361 A136090 A032688
KEYWORD
nonn,more
AUTHOR
Jason Earls, Jun 22 2005
EXTENSIONS
Terms corrected by Jinyuan Wang, Mar 22 2020
a(13)-a(14) from Michael S. Branicky, Mar 19 2024
STATUS
approved