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 A019705 #19 Jun 19 2023 10:46:18
%S A019705 5,9,0,8,1,7,9,5,0,3,0,1,8,3,8,6,7,5,7,6,6,0,5,5,8,2,7,7,8,0,3,8,1,7,
%T A019705 2,7,5,9,9,1,8,3,1,5,2,0,4,0,7,9,5,7,0,9,4,0,4,6,0,2,5,9,6,6,1,7,6,3,
%U A019705 7,0,9,4,8,6,3,6,7,7,3,9,3,7,9,1,6,5,0,2,1,8,9,1,2,8,4,8,2,2,1
%N A019705 Decimal expansion of sqrt(Pi)/3.
%H A019705 Ivan Panchenko, <a href="/A019705/b019705.txt">Table of n, a(n) for n = 0..1000</a>
%H A019705 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>.
%F A019705 Equals sqrt(A019676). - _Michel Marcus_, Aug 31 2014
%F A019705 Equals 10 * Sum_{k>=0} (k+1/2)!/(k+4)!. - _Amiram Eldar_, Jun 19 2023
%t A019705 RealDigits[Sqrt[Pi]/3,10,120][[1]] (* _Harvey P. Dale_, Jun 07 2018 *)
%o A019705 (PARI) sqrt(Pi)/3 \\ _Charles R Greathouse IV_, Oct 01 2022
%Y A019705 Cf. A002161, A019676.
%K A019705 nonn,cons
%O A019705 0,1
%A A019705 _N. J. A. Sloane_