OFFSET
1,1
LINKS
Zak Seidov, Table of n, a(n) for n = 1..10000
MATHEMATICA
Select[PowerMod[2, #, #]&/@Range[550], OddQ] (*Ray Chandler, Nov 20 2011*)
CROSSREFS
KEYWORD
nonn
AUTHOR
Zak Seidov, Nov 14 2006, corrected Nov 25 2006
EXTENSIONS
Edited by Ray Chandler at the suggestion of Jon E. Schoenfield, Nov 20 2011
STATUS
approved