A114927 - OEIS

A114927

Numbers n such that sigma(n)=3*reversal(n).

41, 291552, 692133, 2946762, 8231796, 21732508611, 27892659612

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OFFSET

1,1

COMMENTS

No more terms through 10^9. - Ryan Propper, Jan 08 2007

a(8) > 10^12. - Giovanni Resta, Oct 28 2012

LINKS

MATHEMATICA

Do[If[DivisorSigma[1, n] == 3*FromDigits[Reverse[IntegerDigits[n]]], Print[n]], {n, 20000000}]

CROSSREFS

KEYWORD

base,more,nonn

AUTHOR

EXTENSIONS

a(6)-a(7) from Donovan Johnson, Dec 21 2008

STATUS

approved