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A046459
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The only integers equal to the sum of the digits of their cubes.
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10
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OFFSET
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0,3
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COMMENTS
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This sequence was first found by the French mathematician Claude (Séraphin) Moret-Blanc in 1879. F. Le Lionnais, Les nombres remarquables, Hermann, 1983, page 27 for the last number of this sequence: 27. [Bernard Schott, Dec 07 2012]
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REFERENCES
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J. Roberts, "Lure of the Integers", The Mathematical Association of America, 1992, p. 172.
Italo Ghersi, Matematica dilettevole e curiosa, pag. 115, Hoepli, Milano, 1967 [From Vincenzo Librandi, Jan 02 2009]
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LINKS
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Table of n, a(n) for n=0..6.
Eric Weisstein's World of Mathematics, Cubic Number.
Bernard Schott and Norbert Verdier, QDL 19: Quels beaux cubes ! (French mathematical forum les-mathematiques.net)
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EXAMPLE
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a(3) = 8 because 8^3 = 512 and 5+1+2 = 8
a(7)=27 because 27^3 = 19683 and 1 + 9 + 6 + 8 + 3 = 27.
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CROSSREFS
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Cf. A004164, A055569, A055575, A055576, A055577.
Sequence in context: A115434 A024107 A066554 * A075485 A217433 A023700
Adjacent sequences: A046456 A046457 A046458 * A046460 A046461 A046462
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KEYWORD
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base,fini,full,nonn
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AUTHOR
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Patrick De Geest, Aug 15 1998.
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STATUS
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approved
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