OFFSET
1,2
MATHEMATICA
Select[ Range[ 10^5 ], Mod[ PowerMod[ 12, #, # ] + PowerMod[ 11, #, # ] + PowerMod[ 10, #, # ] + PowerMod[ 9, #, # ] + PowerMod[ 8, #, # ] + PowerMod[ 7, #, # ] + PowerMod[ 6, #, # ] + PowerMod[ 5, #, # ] + PowerMod[ 4, #, # ] + PowerMod[ 3, #, # ] + PowerMod[ 2, #, # ] + 1, # ] == 0 & ]
Select[Range[7200], Divisible[Total[Range[12]^#], #]&] (* Harvey P. Dale, Aug 05 2017 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Robert G. Wilson v, Sep 22 2000
STATUS
approved