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 A034906 #13 Jul 03 2020 12:17:24 %S A034906 1,2,4,8,23,46,61,215,652,821,2918,4201,6904,8402,48361,63556,86723, %T A034906 270131,441262,882425,2517902,4034914,6758401,8068838,23445533, %U A034906 46880176,61277761,219078635,654534862 %N A034906 Powers of 2 written backwards and sorted. %H A034906 T. D. Noe, <a href="/A034906/b034906.txt">Table of n, a(n) for n=1..1000</a> %t A034906 Sort[FromDigits[Reverse[IntegerDigits[#]]]&/@(2^Range[0,30])] (* _Harvey P. Dale_, Mar 06 2012 *) %t A034906 IntegerReverse[#]&/@(2^Range[0,30])//Sort (* Requires Mathematica version 10 or later *) (* _Harvey P. Dale_, Jul 03 2020 *) %Y A034906 Cf. A000079, A004094. %K A034906 nonn,base,easy,nice %O A034906 1,2 %A A034906 _N. J. A. Sloane_