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 A298752 #4 Feb 13 2018 19:18:18 %S A298752 1,1,9,7,1,8,5,7,5,5,3,7,6,4,2,0,2,4,9,1,9,7,0,6,0,4,4,8,2,0,5,5,8,5, %T A298752 5,7,4,8,5,0,5,5,7,0,7,1,9,9,0,3,9,7,8,7,2,9,5,2,2,2,5,0,5,7,7,3,9,7, %U A298752 4,1,8,0,3,4,0,4,5,0,0,1,0,3,1,9,4,5 %N A298752 Decimal expansion of (1/2)(1 + sqrt(-7 + 4*sqrt(5))). %H A298752 Clark Kimberling, <a href="/A298752/b298752.txt">Table of n, a(n) for n = 1..10000</a> %e A298752 constant = 1.1971857553764202492... = positive zero of x^2 - x + 2- sqrt(5). %t A298752 r = (1/2)*(1 + Sqrt[-7 + 4 Sqrt[5]]) %t A298752 RealDigits[N[r, 100], 10][[1]]; (* A298752 *) %Y A298752 Cf. A298749, A298750, A298751. %K A298752 nonn,easy,cons %O A298752 1,3 %A A298752 _Clark Kimberling_, Feb 13 2018