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A248546
Numbers n such that 75^n - 2 is prime.
0
1, 2, 25, 32, 62, 128, 848, 2091, 2882, 11761
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OFFSET
1,2
COMMENTS
Dedicated to N. J. A. Sloane for his 75th birthday!
LINKS
Table of n, a(n) for n=1..10.
MATHEMATICA
Select[Range[1000], PrimeQ[75^#-2]&]
PROG
(Magma) [n: n in [0..200] | IsPrime(75^n-2)]; //
Vincenzo Librandi
, Oct 08 2014
(PARI) is(n)=ispseudoprime(75^n-2) \\
Charles R Greathouse IV
, Jun 13 2017
CROSSREFS
Cf.
A014224
,
A109080
,
A090669
,
A128455
,
A128457
,
A128458
,
A128459
,
A128460
.
Sequence in context:
A163497
A264118
A054292
*
A369670
A038834
A041071
Adjacent sequences:
A248543
A248544
A248545
*
A248547
A248548
A248549
KEYWORD
nonn
,
more
AUTHOR
Vaclav Kotesovec
, Oct 08 2014
EXTENSIONS
a(10) from
Michael S. Branicky
, Apr 02 2023
STATUS
approved
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Last modified April 24 06:14 EDT 2024. Contains 371918 sequences. (Running on oeis4.)