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 A157471 #8 Sep 08 2022 08:45:42
%S A157471 3,8,8,5,7,0,0,6,7,9,9,7,0,5,8,7,4,4,1,7,0,8,6,1,7,5,8,9,6,7,0,6,4,0,
%T A157471 4,3,0,2,6,2,0,8,3,0,6,2,5,7,8,3,5,7,2,3,7,0,3,2,8,9,6,6,3,4,8,7,5,9,
%U A157471 8,4,8,0,3,3,8,3,7,4,2,3,6,9,9,5,6,8,6,8,6,9,3,7,3,3,0,8,8,9,3,4,3,0,8,8,1
%N A157471 Decimal expansion of (19491+12070*sqrt(2))/97^2.
%C A157471 lim_{n -> infinity} b(n)/b(n-1) = (19491+12070*sqrt(2))/97^2 for n mod 3 = 0, b = A129836.
%C A157471 lim_{n -> infinity} b(n)/b(n-1) = (19491+12070*sqrt(2))/97^2 for n mod 3 = 1, b = A157469.
%H A157471 G. C. Greubel, <a href="/A157471/b157471.txt">Table of n, a(n) for n = 1..10000</a>
%F A157471 (19491+12070*sqrt(2))/97^2 = (170+71*sqrt(2))/(170-71*sqrt(2))
%F A157471 = (3+2*sqrt(2))*(14-sqrt(2))^2/(14+sqrt(2))^2.
%e A157471 (19491+12070*sqrt(2))/97^2 = 3.88570067997058744170...
%p A157471 with(MmaTranslator[Mma]): Digits:=100:
%p A157471 RealDigits(evalf((19491+12070*sqrt(2))/97^2))[1]; # _Muniru A Asiru_, Mar 31 2018
%t A157471 RealDigits[(19491+12070*Sqrt[2])/97^2, 10, 100][[1]] (* _G. C. Greubel_, Mar 30 2018 *)
%o A157471 (PARI) (19491+12070*sqrt(2))/97^2 \\ _G. C. Greubel_, Mar 30 2018
%o A157471 (Magma) (19491+12070*Sqrt(2))/97^2; // _G. C. Greubel_, Mar 30 2018
%Y A157471 Cf. A129836, A157469, A002193 (decimal expansion of sqrt(2)), A156035 (decimal expansion of 3+2*sqrt(2)), A157470 (decimal expansion of (99+14*sqrt(2))/97).
%K A157471 cons,nonn
%O A157471 1,1
%A A157471 _Klaus Brockhaus_, Mar 12 2009