

A087894


Primes n such that 9^n8^n is composite.


1



3, 5, 11, 13, 17, 19, 23, 37, 41, 43, 47, 53, 59, 61, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233, 239, 241, 251, 257, 263, 269, 271, 277, 281, 283, 293, 307
(list;
graph;
refs;
listen;
history;
text;
internal format)



OFFSET

2,1


LINKS

Table of n, a(n) for n=2..58.


MATHEMATICA

Select[Prime[Range[100]], !PrimeQ[9^#8^#]&] (* Harvey P. Dale, May 01 2011 *)


PROG

(PARI) apmb(a, b, n) = { forprime(x=2, n, y=a^xb^x; if(!ispseudoprime(y), print1(x", "); ) ) }


CROSSREFS

Sequence in context: A020620 A136056 A059636 * A245048 A059352 A059309
Adjacent sequences: A087891 A087892 A087893 * A087895 A087896 A087897


KEYWORD

nonn


AUTHOR

Cino Hilliard, Oct 26 2003


STATUS

approved



