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Search: id:A116978
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A116978 Cubes for which the multiplicative digital root is also a cube. +0
2
0, 1, 8, 64, 125, 343, 512, 1000, 4096, 4913, 5832, 6859, 8000, 9261, 10648, 13824, 15625, 17576, 19683, 21952, 27000, 32768, 35937, 39304, 42875, 46656, 50653, 54872, 59319, 64000, 68921, 74088, 79507, 85184, 91125, 97336, 103823, 110592 (list; graph; listen)
OFFSET

1,3

LINKS

Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.

MATHEMATICA

fQ[n_] := IntegerQ[ FixedPoint[Times @@ IntegerDigits@# &, n]^(1/3)]; Select[Range[0, 48]^3, fQ@# &] (* Robert G. Wilson v *)

CROSSREFS

Sequence in context: A074102 A118719 A134739 this_sequence A125110 A043152 A044195

Adjacent sequences: A116975 A116976 A116977 this_sequence A116979 A116980 A116981

KEYWORD

nonn,base

AUTHOR

Luc Stevens (lms022(AT)yahoo.com), Apr 01 2006

EXTENSIONS

Corrected and extended by Robert G. Wilson v (rgwv(at)rgwv.com), Apr 03 2006

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Last modified November 18 20:14 EST 2008. Contains 147244 sequences.


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