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A058588 Numbers k such that 5*2^k - 3 is prime. 0
0, 1, 2, 3, 5, 6, 8, 9, 12, 17, 20, 27, 29, 30, 36, 62, 72, 83, 117, 119, 137, 149, 152, 176, 201, 243, 470, 540, 590, 611, 887, 996, 1118, 1148, 1269, 1431, 2099, 2117, 3822, 5373, 5640, 6677, 8352, 19355, 25937, 27749, 27948, 34877 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

a(49) > 37557. - Jinyuan Wang, Jan 21 2020

LINKS

Table of n, a(n) for n=1..48.

MATHEMATICA

Do[ If[ PrimeQ[ 5*2^n - 3 ], Print[ n ] ], {n, 0, 10000} ]

PROG

(PARI) is(n)=ispseudoprime(5*2^n-3) \\ Charles R Greathouse IV, Jun 13 2017

CROSSREFS

Sequence in context: A030759 A030709 A226806 * A035399 A153775 A173666

Adjacent sequences:  A058585 A058586 A058587 * A058589 A058590 A058591

KEYWORD

nonn,more

AUTHOR

Robert G. Wilson v, Dec 26 2000

EXTENSIONS

First term 0 inserted by Georg Fischer, Aug 01 2019

a(44)-a(48) from Jinyuan Wang, Jan 21 2020

STATUS

approved

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Last modified May 16 11:09 EDT 2021. Contains 343942 sequences. (Running on oeis4.)