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 A353728 #7 May 13 2022 14:05:58 %S A353728 1,11,10,110,100,101,111,1001,1000,1010,1011,1100,1101,1110,1111, %T A353728 10001,10000,10010,10011,10100,10101,10110,10111,11000,11001,11010, %U A353728 11011,11100,11101,11110,11111,100001,100000,100010,100011,100100,100101,100110,100111,101000,101001,101010,101011,101100,101101,101110,101111 %N A353728 A115510(n) written in base 2. %o A353728 (Python) %o A353728 from itertools import islice %o A353728 def A353728_gen(): # generator of terms %o A353728 yield 1 %o A353728 l1, s, b = 1, 2, set() %o A353728 while True: %o A353728 i = s %o A353728 while True: %o A353728 if i & l1 and not i in b: %o A353728 yield int(bin(i)[2:]) %o A353728 l1 = i %o A353728 b.add(i) %o A353728 while s in b: %o A353728 b.remove(s) %o A353728 s += 1 %o A353728 break %o A353728 i += 1 %o A353728 A353728_list = list(islice(A353728_gen(),30)) # _Chai Wah Wu_, May 13 2022 %Y A353728 Cf. A115510; A064413, A064743, A064744. %K A353728 nonn,base %O A353728 1,2 %A A353728 _N. J. A. Sloane_, May 13 2022