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A104391
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3-Smith numbers.
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3
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402, 510, 700, 1113, 1131, 1311, 2006, 2022, 2130, 2211, 2240, 3102, 3111, 3204, 3210, 3220, 4031, 4300, 4410, 5310, 6004, 6100, 6300, 7031, 7120, 9000, 10034, 10125, 10206, 10251, 10304, 10413, 10521, 10612, 10800, 11033, 11111, 11114
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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REFERENCES
| McDaniel, W. L., "The Existence of infinitely Many k-Smith numbers", Fibonacci Quarterly, 25(1987), pp. 76-80.
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LINKS
| S. S. Gupta, Smith numbers.
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EXAMPLE
| 402 is a 3-Smith number because sum of the digits of its prime factors, i.e. Sp (402) = Sp(2*3*67)= 2 + 3 + 6 + 7 = 18 which is equal to 3 times the digit sum of 402 i.e. 3*S(402) = 3*(4+0+2)=18
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CROSSREFS
| Cf. A006753, A104390.
Sequence in context: A097742 A115244 A031518 * A158312 A128767 A097740
Adjacent sequences: A104388 A104389 A104390 * A104392 A104393 A104394
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KEYWORD
| nonn,base
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AUTHOR
| Eric Weisstein (eric(AT)weisstein.com), Mar 04, 2005 and Shyam Sunder Gupta (guptass(AT)rediffmail.com), Mar 11 2005
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