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A062592
Numbers k such that 26^k - 25^k is prime or a strong pseudoprime.
3
3, 7, 97, 109, 401, 431
OFFSET
1,1
COMMENTS
a(7) > 10^5. - Robert Price, Nov 10 2012
KEYWORD
nonn,hard
AUTHOR
Mike Oakes, May 18 2001, May 19 2001
EXTENSIONS
Edited by M. F. Hasler, Sep 21 2013
STATUS
approved