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Search: id:A050225
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| 6969, 19998, 36399, 39693, 66099, 69663, 69897, 89769, 99363, 99759, 109989, 118899, 181998, 191799, 199089, 297099, 306939, 333399, 336963, 339933, 363099, 396363, 397998, 399333, 399729, 588969, 606666, 606909, 639633, 660693, 666633
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OFFSET
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1,1
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REFERENCES
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McDaniel, W. L., "The existence of infinitely many k- Smith numbers", Fibonacci Quarterly, 25(1987), pp. 76-80.
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LINKS
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S. S. Gupta, Smith Numbers.
Eric Weisstein's World of Mathematics, Smith Numbers
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EXAMPLE
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6969 is a 3^(-1) Smith number because digit sum of 6969 i.e. S(6969) = 6 + 9+ 6 + 9=30, which is equal to 3 times the sum of the digits of its prime factors i.e. 3* Sp (6969) =3 * Sp (3 * 23 * 101) = 3 *( 3 + 2 + 3 + 1 + 0 + 1) = 30.
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CROSSREFS
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Cf. A006753, A050224.
Cf. A006753.
Sequence in context: A072870 A118508 A028542 this_sequence A050673 A050663 A114615
Adjacent sequences: A050222 A050223 A050224 this_sequence A050226 A050227 A050228
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KEYWORD
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nonn
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AUTHOR
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Eric Weisstein (eric(AT)weisstein.com)
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EXTENSIONS
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More terms from Shyam Sunder Gupta (guptass(AT)rediffmail.com), Mar 11 2005
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