A062663 Numbers k such that 97^k - 96^k is a strong pseudoprime.

2, 1307, 15289

Offset

1,1

Comments

a(4) > 20000. - Derek Orr, Sep 07 2014

a(4) > 10^5. - Robert Price, Nov 02 2015

Links

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

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

Crossrefs

Cf. A000043, A057468, A059801, A059802, A062572-A062666.

Sequence in context: A171940 A160003 A078170 * A295187 A345402 A298757

Adjacent sequences: A062660 A062661 A062662 * A062664 A062665 A062666

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