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 A037413 #16 Apr 23 2021 22:16:06 %S A037413 1,8,64,65,72,512,513,520,521,576,577,584,4096,4097,4104,4105,4160, %T A037413 4161,4168,4169,4608,4609,4616,4617,4672,4673,4680,32768,32769,32776, %U A037413 32777,32832,32833,32840,32841,33280,33281,33288,33289,33344,33345,33352 %N A037413 Positive numbers having the same set of digits in base 2 and base 8. %H A037413 John Cerkan, <a href="/A037413/b037413.txt">Table of n, a(n) for n = 1..10000</a> %o A037413 (PARI) isok(n) = Set(digits(n, 2)) == Set(digits(n, 8)); \\ _John Cerkan_, Jan 13 2017 %Y A037413 Subsequence of A033045. %K A037413 nonn,base %O A037413 1,2 %A A037413 _Clark Kimberling_ %E A037413 a(28)-a(42) from _John Cerkan_, Jan 13 2017 %E A037413 Name edited by _John Cerkan_, Jan 14 2017