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 A269559 #14 Jan 16 2017 14:07:15 %S A269559 1,2,3,9,5,9,7,2,7,9,6,1,7,6,1,8,5,0,8,2,4,4,1,2,7,5,5,1,6,8,6,0,8,4, %T A269559 2,4,5,4,3,3,2,8,9,5,2,2,6,8,7,4,2,0,8,6,6,4,6,1,6,4,8,9,8,8,8,1,9,4, %U A269559 0,6,3,8,9,3,3,4,5,3,5,9,0,1,5,8,7,3,2,6,0,6,9,4,5,7,3,4,8,8,2,3,8,2,0 %N A269559 Decimal expansion of Psi(log(2)), negated. %C A269559 Psi(x) is the digamma function (logarithmic derivative of the Gamma function). %H A269559 G. C. Greubel, <a href="/A269559/b269559.txt">Table of n, a(n) for n = 1..5000</a> %e A269559 -1.2395972796176185082441275516860842454332895226874208... %p A269559 evalf(Psi(ln(2)), 120); %t A269559 RealDigits[PolyGamma[Log[2]], 10, 120][[1]] %o A269559 (PARI) default(realprecision, 120); psi(log(2)) %o A269559 (MATLAB) format long; psi(log(2)) %Y A269559 Cf. A269557, A269558, A269545, A269546, A269547, A257955, A257957, A257958, A257959, A002161. %Y A269559 Cf. A073005, A068466, A175380, A175379, A220086, A203142, A256190, A256191, A256192, A203140, A203139, A203138, A203137. %K A269559 nonn,cons %O A269559 1,2 %A A269559 _Iaroslav V. Blagouchine_, Feb 29 2016