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A062592 Numbers n such that 26^n - 25^n is prime or a strong pseudoprime. 3
3, 7, 97, 109, 401, 431 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

a(7) > 10^5 - Robert Price, Nov 10 2012

LINKS

Table of n, a(n) for n=1..6.

CROSSREFS

Cf. A000043, A057468, A059801, A059802, A062572-A062589, A214658, A214655, A062593-A062666.

Sequence in context: A307661 A177495 A088419 * A074349 A159310 A299377

Adjacent sequences:  A062589 A062590 A062591 * A062593 A062594 A062595

KEYWORD

nonn,hard

AUTHOR

Mike Oakes, May 18 2001, May 19 2001

EXTENSIONS

Edited by M. F. Hasler, Sep 21 2013

STATUS

approved

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Last modified February 21 18:05 EST 2020. Contains 332107 sequences. (Running on oeis4.)