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 A175268 #4 Aug 03 2016 18:09:45 %S A175268 1,2,2,3,4,4,5,6,7,8,8,9,11,12,13,14,16,17,18,20,22,23,25,27,29,32,34, %T A175268 36,39,41,44,47,50,53,56,60,64,67,71,75,80,84,89,94,99,104,110,115, %U A175268 121,128,134,141,148,155,162,170,178,187,196,205,214,224,234,245,256,267 %N A175268 a(n)=floor(2^sqrt(n)). %e A175268 a(0)=floor(2^sqrt(0))=floor(2^0)=1, %e A175268 a(1)=floor(2^sqrt(1))=floor(2)=2, %e A175268 a(2)=floor(2^sqrt(2))=floor(2.665)=2. %t A175268 Floor[2^Sqrt[Range[0,70]]] (* _Harvey P. Dale_, Aug 03 2016 *) %Y A175268 Cf. A134886 a(n)=floor(n^sqrt(2)). %K A175268 nonn %O A175268 0,2 %A A175268 _Zak Seidov_, Mar 18 2010