cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A345361 Numbers that are not palindromes even after removing trailing zeros and are divisible by their reverses.

This page as a plain text file.
%I A345361 #12 Jun 18 2021 12:17:13
%S A345361 510,540,810,2100,4200,5100,5200,5400,5610,5700,5940,6300,8100,8400,
%T A345361 8712,8910,9801,21000,23100,27000,42000,46200,51000,51510,52000,52200,
%U A345361 52800,54000,54540,56100,56610,57000,57200,59400,59940,63000,65340,69300,81000,81810,84000,87120
%N A345361 Numbers that are not palindromes even after removing trailing zeros and are divisible by their reverses.
%C A345361 Palindromes with or without trailing zeros are trivially divisible their reverses.
%C A345361 If k is in the sequence then 10*k is in the sequence. - _David A. Corneth_, Jun 16 2021
%e A345361 510 is divisible by its reverse 15. Thus, 510 is in this sequence.
%o A345361 (Python)
%o A345361 def pal(s): return s == s[::-1]
%o A345361 def rmz(s): return s.strip('0')
%o A345361 def ok(n): s = str(n); return not (pal(s) or pal(rmz(s)) or n%int(s[::-1]))
%o A345361 print(list(filter(ok, range(82000)))) # _Michael S. Branicky_, Jun 16 2021
%Y A345361 Cf. A002113, A004086, A169824.
%K A345361 nonn,base
%O A345361 1,1
%A A345361 _Tanya Khovanova_, Jun 16 2021