

A300292


Numbers k such that k^k + 9 is a prime.


2




OFFSET

1,1


COMMENTS

No more terms <= 7000.  Jon E. Schoenfield, Mar 16 2018


LINKS

Table of n, a(n) for n=1..3.


PROG

(PARI) isok(k) = ispseudoprime(k^k + 9); \\ Altug Alkan, Mar 16 2018


CROSSREFS

Numbers k such that k^k + b is a prime: A300981 (b=10), A300976 (b=5), A100408 (b=2), A100407 (b=2), A166852 (b=3), A100837 (b=4), A100838 (b=7), this sequence (b=9), A100839 (b=10), A173974 (b=43).
Cf. A074966.
Sequence in context: A216358 A294274 A099824 * A259109 A190578 A098533
Adjacent sequences: A300289 A300290 A300291 * A300293 A300294 A300295


KEYWORD

nonn,hard,more,bref


AUTHOR

Seiichi Manyama, Mar 16 2018


STATUS

approved



