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A070837
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Smallest number k such that |k - R(k)| = 9n, where R(k) is digit reversal of k (A004086); or 0 if no such k exists.
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2
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10, 13, 14, 15, 16, 17, 18, 19, 90, 1011, 100, 0, 0, 0, 0, 0, 0, 0, 0, 1021, 190, 103, 0, 0, 0, 0, 0, 0, 0, 1031, 1080, 0, 104, 0, 0, 0, 0, 0, 0, 1041, 1070, 0, 0, 105, 0, 0, 0, 0, 0, 1051, 1060, 0, 0, 0, 106, 0, 0, 0, 0, 1061, 1050, 0, 0, 0, 0, 107, 0, 0, 0, 1071, 1040, 0, 0, 0, 0, 0
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| If 9n<1000, k at most 5 digits, abs(k-R(k))=9n then 10 must divide n. - Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), Jan 02 2003
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MATHEMATICA
| a = Table[0, {50}]; Do[d = Abs[n - FromDigits[ Reverse[ IntegerDigits[n]]]] / 9; If[d < 51 && a[[d]] == 0, a[[d]] = n], {n, 1, 10^7}]; a
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CROSSREFS
| Cf. A070838.
Sequence in context: A092887 A131365 A102362 * A188643 A087140 A061837
Adjacent sequences: A070834 A070835 A070836 * A070838 A070839 A070840
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KEYWORD
| base,nonn
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AUTHOR
| Amarnath Murthy (amarnath_murthy(AT)yahoo.com), May 12 2002
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EXTENSIONS
| More terms from Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), Jan 02 2003
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