OFFSET
1,2
COMMENTS
No other terms below 10^16.
Larger term: 18468744643735483963902321985787. - Max Alekseyev, Aug 01 2011
LINKS
OEIS Wiki, 2^n mod n
MATHEMATICA
Do[ If[ PowerMod[ 2, n, n ] + 3 == n, Print[n]], { n, 1, 10^9, 2 } ]
CROSSREFS
KEYWORD
nonn,more
AUTHOR
EXTENSIONS
Corrected and extended by Olivier Wittenberg, May 23 2004.
a(10)-a(13) from Max Alekseyev, Aug 01 2011
STATUS
approved