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Search: id:A006887
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| A006887 |
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Kaprekar triples: q such that q=x+y+z and q^3=x*10^2n + y*10^n + z, where z < 10^n and n is the number of digits in q. q is not a power of 10 (except q=1)
(Formerly M4478)
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+0
3
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| 1, 8, 45, 297, 2322, 2728, 4445, 4544, 4949, 5049, 5455, 5554, 7172, 27100, 44443, 55556, 60434, 77778, 143857, 208494, 226071, 279720, 313390, 324675, 329967, 346060, 368928, 395604, 422577, 427868, 461539, 472823, 478115, 488214, 494208
(list; graph; listen)
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OFFSET
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1,2
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REFERENCES
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N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
D. Wells, The Penguin Dictionary of Curious and Interesting Numbers. Penguin Books, NY, 1986, 151.
Douglas E. Iannucci and Bertrum Foster, Kaprekar Triples, Journal of Integer Sequences, Vol. 8 (2005), Article 05.4.8.
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LINKS
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R. Munafo, Kaprekar Sequences
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CROSSREFS
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Sequence in context: A032208 A163003 A055422 this_sequence A009369 A120044 A002686
Adjacent sequences: A006884 A006885 A006886 this_sequence A006888 A006889 A006890
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KEYWORD
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nonn,base
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AUTHOR
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mrob(AT)mrob.com (Robert P Munafo)
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EXTENSIONS
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Entry revised by Larry Reeves (larryr(AT)acm.org), Apr 25 2001 and Dec 08, 2002
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