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
Examples
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.
Links
- Eric M. Schmidt, Table of n, a(n) for n = 1..1000
Programs
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Sage
# See A003226. - Eric M. Schmidt, Feb 09 2014
Extensions
More terms from Eric M. Schmidt, Feb 09 2014