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A062609
Numbers k such that 43^k - 42^k is prime or a strong pseudoprime.
2
3, 13, 43, 211
OFFSET
1,1
COMMENTS
a(5) > 10^5 - Robert Price, Dec 24 2012
PROG
(PARI) forprime(n=1, 9999, ispseudoprime(43^n-42^n) && print1(n", ")) \\ - M. F. Hasler, Sep 21 2013
KEYWORD
nonn,hard
AUTHOR
Mike Oakes, May 18 2001, May 19 2001
EXTENSIONS
Edited by M. F. Hasler, Sep 21 2013
STATUS
approved