login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A302136 Numbers k such that 10*k^k - 9 is prime. 4
2, 4, 14, 80, 1133 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

10*1133^1133 - 9 is a probable prime.

LINKS

Table of n, a(n) for n=1..5.

PROG

(PARI) isok(k) = ispseudoprime(10*k^k - 9); \\ Altug Alkan, Apr 02 2018

CROSSREFS

Numbers k such that b*k^k - b + 1 is prime: A110931 (b=2), A302132 (b=3), A301521 (b=4), A302123 (b=6), A302133 (b=8), A302134 (b=9), this sequence (b=10).

Cf. A302137.

Sequence in context: A075098 A052856 A093462 * A181080 A166894 A232108

Adjacent sequences:  A302133 A302134 A302135 * A302137 A302138 A302139

KEYWORD

nonn,more

AUTHOR

Seiichi Manyama, Apr 02 2018

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 18 09:59 EDT 2019. Contains 327170 sequences. (Running on oeis4.)