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.
%I A037431 #15 Apr 23 2021 22:21:11 %S A037431 1,2,3,4,91,136,200,272,540,545,609,672,705,1035,1164,1665,1681,1698, %T A037431 1699,1748,1818,2115,2123,2179,2323,4257,4260,4625,4626,4682,4691, %U A037431 4760,4802,4817,4818,4834,4880,5211,5251,5315,5324,5328,5331,5337 %N A037431 Positive numbers having the same set of digits in base 5 and base 8. %H A037431 John Cerkan, <a href="/A037431/b037431.txt">Table of n, a(n) for n = 1..10000</a> %e A037431 545 is in the sequence because 545 in base 5 is 4140 and in base 8 it is 1041. %t A037431 Select[Range[5500],Union[IntegerDigits[#,5]]==Union[IntegerDigits[#,8]]&] (* _Harvey P. Dale_, Jun 01 2018 *) %Y A037431 Subsequence of A037395. %K A037431 nonn,base %O A037431 1,2 %A A037431 _Clark Kimberling_ %E A037431 Corrected by _Don Reble_, Apr 28 2006 %E A037431 Edited by _John Cerkan_, Feb 11 2017