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 A035060 #18 Sep 08 2022 08:44:52
%S A035060 0,1,2,3,4,5,6,7,10,11,12,13,14,15,17,18,22,23,24,26,27,30,31,32,34,
%T A035060 36,38,43,46,55,62,65,66,71
%N A035060 Numbers k such that 2^k does not contain the digit 5 (probably finite).
%t A035060 Join[{0}, Select[Range@10000, FreeQ[IntegerDigits[2^#], 5] &]] (* _Vincenzo Librandi_, May 07 2015 *)
%t A035060 Select[Range[0,80],DigitCount[2^#,10,5]==0&] (* _Harvey P. Dale_, Dec 24 2018 *)
%o A035060 (Magma) [n: n in [0..1000] | not 5 in Intseq(2^n) ]; // _Vincenzo Librandi_, May 07 2015
%Y A035060 Cf. similar sequences listed in A035064.
%K A035060 nonn,base
%O A035060 1,3
%A A035060 _Patrick De Geest_, Nov 15 1998
%E A035060 Initial 0 inserted by _Vincenzo Librandi_, May 07 2015