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 A095804 #6 Feb 16 2025 08:32:53 %S A095804 0,4,8,20,44,88,180,360,724,1448,2896,5792,11584,23168,46340,92680, %T A095804 185360,370724,741452,1482908,2965820,5931640,11863280,23726564, %U A095804 47453132,94906264,189812528,379625060,759250124,1518500248 %N A095804 Values of s in Wolfram's iteration for sqrt(2). %C A095804 When interpreted as binary numbers, these successively approach sqrt(2). %H A095804 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/WolframsIteration.html">Wolfram's Iteration</a> %e A095804 724 = 1011010100_2; sqrt(2) = 1.011010100..._2 %Y A095804 Cf. A095803. %K A095804 nonn %O A095804 0,2 %A A095804 _Eric W. Weisstein_, Jun 07 2004