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A057244 Numbers n such that n | 7^n + 6^n + 5^n + 4^n. 0
1, 2, 6, 11, 14, 98, 121, 253, 686, 1331, 1969, 2783, 4802, 5819, 13211, 14641, 22627, 30613, 33614, 39634, 45991, 60643, 64009, 65198, 87967, 133837, 159643, 161051, 172186, 184026, 192533, 235298, 278179, 336743, 667073, 704099, 967637 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..37.

MATHEMATICA

Select[ Range[ 1, 10^6 ], Mod[ PowerMod[ 7, #, # ] + PowerMod[ 6, #, # ] + PowerMod[ 5, #, # ] + PowerMod[ 4, #, # ], # ] == 0 & ]

CROSSREFS

Sequence in context: A057976 A140486 A138327 * A241672 A035487 A299637

Adjacent sequences:  A057241 A057242 A057243 * A057245 A057246 A057247

KEYWORD

nonn

AUTHOR

Robert G. Wilson v, Sep 20 2000

STATUS

approved

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Last modified September 22 11:29 EDT 2020. Contains 337289 sequences. (Running on oeis4.)