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 A195823 #20 Oct 01 2022 23:38:45 %S A195823 5,6,1,9,8,5,1,7,8,4,8,3,2,5,8,1,1,1,4,5,2,5,0,9,9,7,1,4,5,6,3,9,1,5, %T A195823 8,3,9,5,7,3,2,0,7,3,4,9,6,5,3,7,6,1,9,3,5,9,9,1,7,7,6,8,2,0,9,5,3,7, %U A195823 1,3,5,0,4,4,9,5,3,5,0,5,6,4,0,8,3,3,1 %N A195823 Decimal expansion of 8*Pi*5^(1/2). %C A195823 Equals 4*A212003/Product(Gamma(i/4), i=1..4). - _Bruno Berselli_, Jan 17 2013 %H A195823 Soon-Yi Kang and Chang Heon Kim, <a href="http://arxiv.org/abs/0904.3777">Arithmetic Properties of Traces of Singular Moduli on Congruence Subgroups</a>, arXiv:0904.3777v1, Apr 24 2009, p. 5 (Example 1). %H A195823 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a> %e A195823 56.1985178483258111452509971456391583957320734965376193599177682... %t A195823 RealDigits[8*Pi*5^(1/2), 10, 87][[1]] (* _Bruno Berselli_, Feb 04 2012 *) %o A195823 (PARI) 8*Pi*sqrt(5) \\ _Charles R Greathouse IV_, Oct 01 2022 %Y A195823 Cf. A000796. %K A195823 nonn,cons %O A195823 2,1 %A A195823 _Omar E. Pol_, Feb 01 2012 %E A195823 More terms from _Bruno Berselli_, Feb 04 2012