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A062605
Numbers k such that 39^k - 38^k is prime.
0
3, 7, 13, 41
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OFFSET
1,1
COMMENTS
Terms greater than 1000 are often only strong pseudoprimes.
a(5) > 10^5. -
Robert Price
, Nov 13 2012
LINKS
Table of n, a(n) for n=1..4.
PROG
(PARI) is(n)=ispseudoprime(39^n-38^n) \\
Charles R Greathouse IV
, Jun 13 2017
CROSSREFS
Cf.
A000043
,
A057468
,
A059801
,
A059802
,
A062572
-
A062666
.
Sequence in context:
A155225
A051842
A147447
*
A191974
A174241
A289556
Adjacent sequences:
A062602
A062603
A062604
*
A062606
A062607
A062608
KEYWORD
nonn
,
hard
AUTHOR
Mike Oakes
, May 18 2001
STATUS
approved
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Last modified April 25 03:15 EDT 2024. Contains 371964 sequences. (Running on oeis4.)