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 A180730 #6 Jan 17 2016 14:13:40 %S A180730 0,1,16,2,5,14,20,29,32,3,6,9,15,18,21,24,27,30,33,71,36,1,4,7,45,10, %T A180730 48,13,51,16,92,19,95,22,60,25,63,28,66,104,31,69,34,145,72,37,148,2, %U A180730 40,151,5,43,227,8,192,46,157,11,122,49,87,14,52,236,90,17,128,55,166,20 %N A180730 22^a(n) is smallest power of 22 beginning with n. %H A180730 D. Mondot, <a href="/A180730/b180730.txt">Table of n, a(n) for n=1..32699</a> %Y A180730 Cf. A180728, A180729, A180732 %K A180730 base,nonn %O A180730 1,3 %A A180730 _Daniel Mondot_, Sep 18 2010