A201919 Automorphic numbers n^2 ends with n in base 14 (written in base 10).

0, 1, 7, 8, 49, 148, 344, 2401, 36016, 151264, 386561, 1764736, 5764801, 46941952, 58471553, 374712065, 1101076992, 4802079233, 15858967552, 139825248256, 149429406721, 1595702681601, 2453862488064, 14602557997056, 42091354378241, 127990382747648

Offset

1,3

Links

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

Example

a(3) = 7 = (7)_14 since 7^2 = 49 = (37)_14 ends with 7 in base 14.
a(4) = 8 = (8)_14 since 8^2 = 64 = (48)_14 ends with 8 in base 14.
a(5) = 49 = (37)_14 since 49^2 = 2401 = (C37)_14 ends with 37 in base 14.

Prog

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

Crossrefs

Cf. A003226, A201821, A201918, A201921, A201948, A237583.

Sequence in context: A036566 A116554 A038274 * A249310 A094556 A249329

Adjacent sequences: A201916 A201917 A201918 * A201920 A201921 A201922

Keyword

nonn,base

Author

Martin Renner, Dec 06 2011

Extensions

More terms from Eric M. Schmidt, Feb 09 2014

Status

approved