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A214730 Smallest prime q such that 9^n+q*3^n-1 is prime 2
3, 3, 3, 3, 13, 19, 43, 3, 61, 13, 29, 11, 5, 53, 73, 53, 23, 17, 229, 13, 3, 3, 17, 149, 5, 239, 5, 13, 223, 71, 3, 11, 31, 73, 97, 43, 11, 83, 149, 277, 311, 383, 127, 11, 3, 31, 233, 61, 61, 13, 73, 107, 613, 137, 53, 367, 467, 53, 233, 277, 17, 53, 109, 449, 151, 97, 13, 281, 103, 233, 193, 23, 7 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Pierre CAMI, Table of n, a(n) for n = 1..4000

PROG

PFGW and SCRIPTIFY

SCRIPT

DIM nn, 0

DIM qq

DIMS tt

OPENFILEOUT myfile, a(n).txt

LABEL loopn

SET nn, nn+1

IF nn>4000 THEN END

SET qq, 1

LABEL loopq

SET qq, qq+1

SETS tt, %d, %d\,; nn; p(qq)

PRP (3^nn+p(qq))*3^nn-1, tt

IF ISPRP THEN GOTO a

IF ISPRIME THEN GOTO a

GOTO loopk

LABEL a

WRITE myfile, tt

GOTO loopn

CROSSREFS

Cf. A214700

Sequence in context: A170858 A024725 A269562 * A153491 A287505 A288124

Adjacent sequences:  A214727 A214728 A214729 * A214731 A214732 A214733

KEYWORD

nonn

AUTHOR

Pierre CAMI, Jul 27 2012

STATUS

approved

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Last modified November 16 17:39 EST 2018. Contains 317275 sequences. (Running on oeis4.)