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 A175478 #12 Jan 31 2023 08:37:45
%S A175478 1,2,0,6,9,4,8,9,6,0,8,1,2,5,8,1,9,7,7,8,4,3,7,7,9,1,2,3,8,4,9,3,6,5,
%T A175478 9,1,3,6,1,8,4,6,3,3,4,6,6,2,9,2,2,1,9,8,4,8,1,6,7,2,6,8,4,0,0,5,8,2,
%U A175478 1,5,5,1,4,8,0,7,9,8,5,2,5,4,4,5,8,5,4,4,3,0,1,7,7,1,4,0,9,3,3,3,4,2,2,8,3
%N A175478 Decimal expansion of log(3)^2.
%H A175478 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>
%F A175478 Equals A002391^2.
%F A175478 Equals Sum_{n >= 0} (-1)^n*(4/3)^(n+1)/((n+1)^2*binomial(2*n+1,n)). See my entry in A002544 dated Apr 18 2017. - _Peter Bala_, Jan 30 2023
%e A175478 1.2069489608125819778437...
%t A175478 RealDigits[Log[3]^2,10,120][[1]] (* _Harvey P. Dale_, Jan 23 2012 *)
%o A175478 (PARI) log(3)^2 \\ _Charles R Greathouse IV_, May 15 2019
%Y A175478 Cf. A002391, A253191.
%K A175478 cons,easy,nonn
%O A175478 1,2
%A A175478 _R. J. Mathar_, May 25 2010