OFFSET
1,1
LINKS
Robert Israel, Table of n, a(n) for n = 1..253
Seva, Posting on mathoverflow.net, October 29 2014.
MAPLE
select(p -> isprime(p) and igcd(op(map(numtheory:-order, numtheory:-factorset(p-1), p)))=1, [seq(i, i=3..3*10^5, 2)]); # Robert Israel, Dec 02 2017
CROSSREFS
KEYWORD
nonn
AUTHOR
Jeffrey Shallit, Dec 01 2017
EXTENSIONS
a(33)..a(44) from Robert Israel, Dec 02 2017
STATUS
approved