OFFSET
1,2
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..10000
MATHEMATICA
Select[ Range[ 100000 ], PowerMod[ #, 12, 13^4 ]==1& ]
CROSSREFS
KEYWORD
nonn
AUTHOR
Robert G. Wilson v, Jun 08 2000
STATUS
approved