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A057190
Numbers n such that (24^n+1)/25 is a prime.
14
7, 11, 19, 2207, 2477, 4951
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OFFSET
1,1
COMMENTS
a(7) > 10^5. -
Robert Price
, Jun 04 2013
LINKS
Table of n, a(n) for n=1..6.
H. Dubner and T. Granlund,
Primes of the Form (b^n+1)/(b+1)
, J. Integer Sequences, 3 (2000), #P00.2.7.
H. Lifchitz,
Mersenne and Fermat primes field
PROG
(PARI) isok(n) = (denominator(p=(24^n+1)/25)==1) && isprime(p); \\
Michel Marcus
, Oct 30 2017
CROSSREFS
Sequence in context:
A282037
A050562
A321806
*
A106674
A184063
A076854
Adjacent sequences:
A057187
A057188
A057189
*
A057191
A057192
A057193
KEYWORD
nonn
,
more
AUTHOR
N. J. A. Sloane
, Sep 15 2000
STATUS
approved
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Last modified June 30 01:43 EDT 2024. Contains 373859 sequences. (Running on oeis4.)