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Search: id:A062390
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| A062390 |
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Numbers such that (n + R(n)) / (n - R(n)) = 11 where R(n) is the digit reversal of n (A004086). |
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| 45, 54, 495, 594, 4995, 5994, 49995, 59994, 499995, 599994, 4999995, 5999994, 49999995, 59999994, 499999995, 599999994, 4999999995, 5999999994, 49999999995, 59999999994, 499999999995, 599999999994, 4999999999995
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Are there numbers for which (n + R(n)) / (n - R(n)) is a number other than 11?
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FORMULA
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a(2n) = 6*10^(n+1) - 6 and a(2n-1) = 5*10^(n+1) - 5.
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EXAMPLE
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(4995 + 5994) /(5994 - 4995) = 10989/999 = 11.
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CROSSREFS
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Sequence in context: A044026 A085607 A087993 this_sequence A116247 A037042 A119208
Adjacent sequences: A062387 A062388 A062389 this_sequence A062391 A062392 A062393
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KEYWORD
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nonn,base,easy
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Jun 27 2001
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EXTENSIONS
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Corrected formula and more terms from Jason Earls (zevi_35711(AT)yahoo.com), Jun 29 2001
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