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 A257581 #18 May 04 2018 11:26:46 %S A257581 1,8,7,3,4,9,5,1,0,9,3,7,1,3,1,5,4,8,7,9,1,9,3,4,7,5,3,0,9,9,3,6,4,7, %T A257581 5,5,3,4,3,2,1,3,1,0,3,5,6,4,4,9,7,9,3,1,4,4,0,8,6,1,5,6,4,8,0,3,0,3, %U A257581 4,4,7,3,5,1,1,8,9,2,4,1,2,3,9,8,3,7,6 %N A257581 Continued square root map applied to the sequence (1,4,2,8,5,7) repeated (A020806). %C A257581 The continued square root map applied to a sequence b(1), b(2), b(3), ... is defined to be the number sqrt(b(1)+sqrt(b(2)+sqrt(b(3)+sqrt(b(4)+...)))). %H A257581 Hiroaki Yamanouchi, <a href="/A257581/b257581.txt">Table of n, a(n) for n = 1..400</a> %H A257581 Herman P. Robinson, <a href="/A257574/a257574.pdf">The CSR Function</a>, Popular Computing (Calabasas, CA), Vol. 4 (No. 35, Feb 1976), pages PC35-3 to PC35-4. Annotated and scanned copy. %e A257581 1.8734951093713154879193475... %Y A257581 Cf. A020806. %K A257581 nonn,cons %O A257581 1,2 %A A257581 _N. J. A. Sloane_, May 02 2015 %E A257581 a(27)-a(87) from _Hiroaki Yamanouchi_, May 03 2015