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A057297 Numbers n such that n | 8^n + 7^n + 1. 0
1, 2, 6, 38, 722, 874, 1102, 5934, 13718, 19342, 260642, 379794, 438254, 809362, 1234806, 4952198 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..16.

MATHEMATICA

Select[ Range[ 10^6 ], Mod[ PowerMod[ 8, #, # ] + PowerMod[ 7, #, # ] + 1, # ] == 0 & ]

CROSSREFS

Sequence in context: A055704 A005740 A006536 * A005530 A072191 A118324

Adjacent sequences:  A057294 A057295 A057296 * A057298 A057299 A057300

KEYWORD

nonn

AUTHOR

Robert G. Wilson v, Sep 22 2000

EXTENSIONS

More terms (a(15) and a(16)) from Harvey P. Dale, Jan 27 2015

STATUS

approved

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Last modified December 15 20:00 EST 2019. Contains 330000 sequences. (Running on oeis4.)