OFFSET
1,1
COMMENTS
It is still a conjecture that 10 is the only nonprime in this sequence. This sequence is disjoint from A214791.
PROG
(PARI) is(n)=my(k); while(((Mod([1, 1; 1, 0], n))^k++)[1, 2]!=-8, ); k==n-7 \\ Charles R Greathouse IV, Nov 25 2014
CROSSREFS
KEYWORD
nonn
AUTHOR
Art DuPre, Aug 03 2012
STATUS
approved