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Search: id:A114927
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| A114927 |
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Numbers n such that sigma(n)=3*reversal(n). |
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3
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OFFSET
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1,1
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COMMENT
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No more terms through 10^9. - Ryan Propper (rpropper(AT)stanford.edu), Jan 08 2007
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MATHEMATICA
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Do[If[DivisorSigma[1, n] == 3*FromDigits[Reverse[IntegerDigits[n]]], Print[n]], {n, 20000000}]
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CROSSREFS
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Cf. A069216, A105324, A114928.
Sequence in context: A084275 A078813 A112550 this_sequence A087512 A125194 A095189
Adjacent sequences: A114924 A114925 A114926 this_sequence A114928 A114929 A114930
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KEYWORD
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base,more,nonn
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AUTHOR
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Farideh Firoozbakht (mymontain(AT)yahoo.com), Jan 28 2006
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