OFFSET
1,1
LINKS
Arkadiusz Wesolowski, Table of n, a(n) for n = 1..10000
MATHEMATICA
Select[Prime@Range[68], ! PrimeQ@MultiplicativeOrder[2, #] &]
PROG
(Magma) [p: p in PrimesInInterval(2, 337) | not IsPrime(Modorder(2, p))]
CROSSREFS
KEYWORD
nonn
AUTHOR
Arkadiusz Wesolowski, Nov 03 2012
STATUS
approved