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A090606 A089144 indexed by A000040. 5
1, 2, 4, 7, 8, 15, 16, 17, 19, 27, 30, 31, 37, 52, 57, 61, 65, 75, 76, 78, 87, 91, 106, 112, 113, 118, 143, 145, 155, 158, 165, 184, 188, 207, 220, 229, 237, 241, 265, 269, 278, 288, 295, 306, 307, 311, 312, 332, 346, 360, 368, 383, 388, 393, 404, 418, 439, 449 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Prime(k)*6 - 3 -+ 2 are both prime. - Juri-Stepan Gerasimov, Mar 19 2010
LINKS
FORMULA
a(n)=k such that A000040(k)=A089144(n).
CROSSREFS
Sequence in context: A018430 A018265 A056694 * A241548 A019539 A327099
KEYWORD
nonn
AUTHOR
Ray Chandler, Dec 06 2003
EXTENSIONS
Offset changed to 1 by Jinyuan Wang, Aug 03 2021
STATUS
approved

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Last modified March 28 16:12 EDT 2024. Contains 371254 sequences. (Running on oeis4.)