A057844 Numbers n such that n | 6^n + 4^n + 2^n.

1, 2, 3, 4, 8, 9, 14, 16, 27, 28, 32, 56, 64, 81, 98, 99, 112, 128, 153, 196, 224, 243, 256, 368, 392, 448, 496, 512, 621, 686, 729, 784, 896, 1024, 1199, 1372, 1568, 1792, 2048, 2187, 2744, 3136, 3584, 3896, 4018, 4096, 4802, 5049, 5488, 6076, 6272, 6561, 7168

Offset

1,2

Comments

Appears to contain 2^i * 7^j for i>=1, j>=0. - Robert Israel, Mar 28 2023

Links

Robert Israel, Table of n, a(n) for n = 1..544

Maple

filter:= n -> 6 &^n + 4 &^ n + 2 &^ n mod n = 0:
select(filter, [$1..10000]); # Robert Israel, Mar 28 2023

Mathematica

Select[ Range[ 15000 ], Mod[ PowerMod[ 6, #, # ] + PowerMod[ 4, #, # ] + PowerMod[ 2, #, # ], # ] == 0 & ]

Crossrefs

Contains A000244.

Sequence in context: A130804 A022999 A244151 * A281089 A242333 A231811

Adjacent sequences: A057841 A057842 A057843 * A057845 A057846 A057847

Keyword

nonn

Author

Robert G. Wilson v, Nov 09 2000

Status

approved