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A201821
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Automorphic numbers: n^2 ends with n in base 6 (written in base 6).
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9
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0, 1, 3, 4, 13, 44, 213, 344, 5344, 50213, 205344, 350213, 1350213, 4205344, 21350213, 34205344, 221350213, 334205344, 2221350213, 3334205344, 52221350213, 152221350213, 403334205344, 5152221350213, 55152221350213, 155152221350213, 400403334205344
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,3
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REFERENCES
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Albert H. Beiler, Recreations in the theory of numbers, New York, Dover, (2nd ed.) 1966, p. 147.
Maurice Kraitchik, Mathematical Recreations, New York, Dover, (2nd ed.) 1953, p. 77.
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LINKS
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Table of n, a(n) for n=1..27.
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EXAMPLE
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a(3) = (3)_6 = 3 since 3^2 = 9 = (13)_6 ends with 3 in base 6.
a(4) = (4)_6 = 4 since 4^2 = 16 = (24)_6 ends with 4 in base 6.
a(5) = (13)_6 = 9 since 9^2 = 81 = (213)_6 ends with 13 in base 6.
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CROSSREFS
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Cf. A237583 (written in base 10), A003226, A201918, A201919, A201921, A201948.
Sequence in context: A194649 A062165 A243764 * A001056 A122151 A216868
Adjacent sequences: A201818 A201819 A201820 * A201822 A201823 A201824
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KEYWORD
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nonn,base
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AUTHOR
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Martin Renner, Dec 06 2011
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EXTENSIONS
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More terms from Eric M. Schmidt, Feb 09 2014
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STATUS
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approved
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