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 A037415 #19 Apr 23 2021 22:16:42 %S A037415 1,10,100,101,110,1000,1001,1010,1011,1100,1101,1110,10000,10001, %T A037415 10010,10011,10100,10101,10110,10111,11000,11001,11010,11011,11100, %U A037415 11101,11110,100000,100001,100010,100011,100100,100101,100110,100111,101000,101001,101010,101011,101100 %N A037415 Positive numbers having the same set of digits in base 2 and base 10. %H A037415 John Cerkan, <a href="/A037415/b037415.txt">Table of n, a(n) for n = 1..10000</a> %o A037415 (PARI) isok(n) = Set(digits(n)) == Set(binary(n)); \\ _Michel Marcus_, Aug 31 2016 %Y A037415 Subsequence of A007088. %K A037415 nonn,base %O A037415 1,2 %A A037415 _Clark Kimberling_ %E A037415 More terms from _Michel Marcus_, Aug 31 2016 %E A037415 Name edited by _John Cerkan_, Jan 20 2017