OFFSET
1,1
COMMENTS
This set is disjoint from A213784. Conjecture: all terms are prime.
LINKS
Robert Israel, Table of n, a(n) for n = 1..5000
MAPLE
f:= proc(n) local a, b, t, T, k;
b:= 0; a:= 1; T:= -3 mod n;
for k from 1 do
t:= a+b mod n;
if t = T then return k+1 fi;
a:= b; b:= t;
od
end proc:
f(1):= 1: f(3):= 1:
select(n -> f(n) = n+6, [$1..2000]); # Robert Israel, Jun 08 2023
CROSSREFS
KEYWORD
nonn
AUTHOR
Art DuPre, Aug 03 2012
STATUS
approved