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A062663
Numbers k such that 97^k - 96^k is a strong pseudoprime.
0
2, 1307, 15289
OFFSET
1,1
COMMENTS
a(4) > 20000. - Derek Orr, Sep 07 2014
a(4) > 10^5. - Robert Price, Nov 02 2015
PROG
(PARI) L=0; forprime(n=L, L+1999, ispseudoprime(97^n-96^n)&&print1(" "n", ")) \\ To show progress, insert the following statement before "ispseudoprime": n>L && print1("/*"L"*/")+L+=50; - M. F. Hasler, Sep 21 2013, PARI syntax updated and non-ASCII characters removed on Sep 08 2014
KEYWORD
nonn,hard,bref,more
AUTHOR
Mike Oakes, May 18 2001, May 19 2001
EXTENSIONS
Edited by M. F. Hasler, Sep 21 2013
a(3) from Derek Orr, Sep 07 2014
STATUS
approved