OFFSET
1,1
COMMENTS
The next term in the sequence is greater than 12400. - Dmitry Kamenetsky, Oct 02 2008
LINKS
Henri Lifchitz and Renaud Lifchitz, PRP Records.
EXAMPLE
65 is present because 6^65 - 5 is prime.
PROG
(PARI) is(n)=ispseudoprime(6^n-5) \\ Charles R Greathouse IV, Feb 20 2017
CROSSREFS
KEYWORD
nonn
AUTHOR
Andrey V. Kulsha, Feb 09 2001
EXTENSIONS
a(21), corresponding to a probable prime, from Dmitry Kamenetsky, Oct 02 2008
a(22)-a(23) from Henri Lifchitz
a(24)-a(25) from Lelio R. Paula
a(26) from Paul Bourdelais, Jan 28 2021
a(27) from Paul Bourdelais, Feb 26 2021
STATUS
approved