

A271883


Numbers n such that 9^n8^(n1) is prime.


10




OFFSET

1,1


COMMENTS

a(6) > 10^5.


LINKS

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


EXAMPLE

2 is a member since 9^2  8^1 = 81  8 = 73 which is a prime number.


MATHEMATICA

Select[Range[0, 100000], PrimeQ[9^#  8^(#  1)] &]


PROG

(PARI) lista(nn) = for(n=1, nn, if(ispseudoprime(9^n8^(n1)), print1(n, ", "))); \\ Altug Alkan, Apr 16 2016


CROSSREFS

Cf. A093713, A082103, A093717, A093793, A096185, A093794, A093795, A096186.
Sequence in context: A322157 A156454 A168669 * A152995 A273366 A053940
Adjacent sequences: A271880 A271881 A271882 * A271884 A271885 A271886


KEYWORD

nonn,more


AUTHOR

Robert Price, Apr 16 2016


STATUS

approved



