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 A298750 #4 Feb 13 2018 19:18:04 %S A298750 2,3,6,7,1,0,1,4,9,0,9,4,7,8,7,8,1,9,9,0,3,4,2,4,2,2,6,5,1,3,9,7,6,9, %T A298750 5,6,9,0,3,8,9,9,0,8,3,2,2,9,2,2,1,0,8,1,7,1,5,9,7,3,5,7,0,6,6,9,7,4, %U A298750 3,2,3,0,3,6,2,7,1,0,7,1,3,2,7,5,1,0 %N A298750 Decimal expansion of (1/2)(1 + sqrt(5 + 4*sqrt(5))). %H A298750 Clark Kimberling, <a href="/A298750/b298750.txt">Table of n, a(n) for n = 1..10000</a> %e A298750 constant = 2.3671014909478781990... = positive zero of x^2 - x - 1- sqrt(5). %t A298750 r = (1/2)*(1 + Sqrt[5 + 4 Sqrt[5]]) %t A298750 RealDigits[N[r, 100], 10][[1]]; (* A298750 *) %Y A298750 Cf. A298749, A298751, A298752. %K A298750 nonn,easy,cons %O A298750 1,1 %A A298750 _Clark Kimberling_, Feb 13 2018