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 A347073 #5 Feb 16 2025 08:34:02 %S A347073 2,2,7,6,7,8,1,0,8,3,5,2,3,0,9,2,6,0,7,7,1,3,4,9,7,1,7,1,3,2,5,4,1,7, %T A347073 3,2,4,0,7,9,0,4,2,2,2,0,1,5,3,3,9,9,6,4,0,7,1,0,5,2,8,8,9,5,8,0,5,5, %U A347073 4,0,6,7,6,8,6,4,3,9,9,3,1,3,6,6,1,5,5,6,9,3,1,3,0,4,5,0,8,7,4,3,4,2,9,0,1,4,3,5,4,5 %N A347073 Decimal expansion of sqrt(1*2 + sqrt(2*3 + sqrt(3*4 + sqrt(4*5 + sqrt(5*6 + ...))))). %H A347073 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/NestedRadical.html">Nested Radical</a> %e A347073 2.276781083523092607713497171325417324079... %Y A347073 Cf. A002378, A072449, A099876, A099879, A296041. %K A347073 nonn,cons %O A347073 1,1 %A A347073 _Ilya Gutkovskiy_, Aug 15 2021