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 A298751 #4 Feb 13 2018 19:18:11 %S A298751 1,7,1,9,0,4,3,8,7,8,4,1,4,4,6,8,5,9,7,2,6,4,6,2,9,9,8,1,8,4,7,4,4,8, %T A298751 3,9,5,0,3,2,1,3,2,9,3,0,1,9,8,4,3,4,1,8,8,8,5,0,1,6,2,4,9,5,9,7,7,4, %U A298751 7,9,1,5,6,5,2,9,6,7,4,3,6,4,5,9,2,8 %N A298751 Decimal expansion of (1/2)(1 + sqrt(-3 + 4*sqrt(5))). %H A298751 Clark Kimberling, <a href="/A298751/b298751.txt">Table of n, a(n) for n = 1..10000</a> %e A298751 constant = 1.7190438784144685973... = positive zero of x^2 - x + 1- sqrt(5). %t A298751 r = (1/2)*(1 + Sqrt[-3 + 4 Sqrt[5]]) %t A298751 RealDigits[N[r, 100], 10][[1]]; (* A298751 *) %Y A298751 Cf. A298749, A298750, A298752. %K A298751 nonn,easy,cons %O A298751 1,2 %A A298751 _Clark Kimberling_, Feb 13 2018