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Search: id:A057493
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A057493 Numbers n such that n | 11^n + 10^n. +0
2
1, 3, 7, 9, 21, 27, 49, 63, 81, 111, 147, 171, 189, 203, 243, 333, 343, 441, 513, 567, 609, 729, 777, 999, 1029, 1143, 1197, 1323, 1421, 1539, 1701, 1791, 1827, 2187, 2331, 2401, 2943, 2997, 3087, 3249, 3429, 3591, 3969, 4107, 4263, 4617, 5103, 5373 (list; graph; listen)
OFFSET

1,2

MATHEMATICA

Select[ Range[ 10000 ], Mod[ PowerMod[ 11, #, # ] + PowerMod[ 10, #, # ], # ] == 0 & ]

CROSSREFS

Sequence in context: A057286 A056745 A057263 this_sequence A003594 A014854 A108729

Adjacent sequences: A057490 A057491 A057492 this_sequence A057494 A057495 A057496

KEYWORD

nonn

AUTHOR

Robert G. Wilson v (rgwv(AT)rgwv.com), Sep 20 2000

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Last modified November 21 14:49 EST 2008. Contains 150807 sequences.


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