A057255 Numbers n such that n | 7^n + 6^n + 5^n + 4^n + 3^n.

1, 5, 25, 95, 125, 305, 425, 625, 1525, 3125, 7625, 15625, 18605, 24625, 38125, 78125, 93025, 129625, 133475, 190625, 201605, 265625, 390625, 465125, 492575, 537715, 953125, 957695

Offset

1,2

Links

Table of n, a(n) for n=1..28.

Mathematica

Select[ Range[ 10^6 ], Mod[ PowerMod[ 7, #, # ] + PowerMod[ 6, #, # ] + PowerMod[ 5, #, # ] + PowerMod[ 4, #, # ] + PowerMod[ 3, #, # ], # ] == 0 & ]

Crossrefs

Sequence in context: A265929 A297452 A147177 * A134140 A225011 A228457

Adjacent sequences: A057252 A057253 A057254 * A057256 A057257 A057258

Keyword

nonn

Author

Robert G. Wilson v, Sep 21 2000

Status

approved