

A201921


Automorphic numbers: n^2 ends with n in base 15 (written in base 10).


6



0, 1, 6, 10, 100, 126, 1000, 2376, 4375, 46251, 156250, 603126, 3640626, 7750000, 19140625, 151718751, 835156251, 1727734375, 5960937501, 32482421875, 236621093751, 340029296875, 8413134765625, 60784912109376, 68961425781250, 709516601562501, 1236678466796875
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OFFSET

1,3


LINKS

Eric M. Schmidt, Table of n, a(n) for n = 1..1000


EXAMPLE

a(3) = 6 = (6)_15 since 6^2 = 36 = (26)_15 ends with 6 in base 15.
a(4) = 10 = (A)_15 since 10^2 = 100 = (6A)_15 ends with A in base 15.
a(5) = 100 = (6A)_15 since 100^2 = 10000 = (2E6A)_15 ends with 6A in base 15.


PROG

(Sage) # See A003226.  Eric M. Schmidt, Feb 09 2014


CROSSREFS

Cf. A003226, A201821, A201918, A201919, A201948, A237583.
Sequence in context: A256246 A246800 A269341 * A117310 A174322 A124902
Adjacent sequences: A201918 A201919 A201920 * A201922 A201923 A201924


KEYWORD

nonn,base


AUTHOR

Martin Renner, Dec 06 2011


EXTENSIONS

More terms from Eric M. Schmidt, Feb 09 2014


STATUS

approved



