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 A200138 #13 Jun 02 2022 05:43:28 %S A200138 9,6,5,0,0,8,5,6,6,7,0,6,1,3,8,4,5,9,3,9,1,2,9,7,6,3,3,1,5,6,8,3,5,4, %T A200138 1,9,6,3,4,1,6,0,4,8,9,6,9,5,2,2,2,8,2,9,1,0,9,8,1,0,7,9,4,2,4,4,9,6, %U A200138 1,2,0,7,3,8,5,6,8,4,0,0,4,3,0,6,3,7,6 %N A200138 Decimal expansion of the negated value of the digamma function at 4/5. %H A200138 <a href="/index/Di#differential_equations">Index entries for sequences related to the digamma function</a> %F A200138 Psi(4/5) = -gamma + Pi*sqrt(1+2/sqrt 5)/2 -5*log(5)*log((3+sqrt 5)/2)/4. %e A200138 Psi(4/5) = -0.965008566706138459391297633... %p A200138 -gamma+Pi*sqrt(1+2/sqrt(5))/2-5*log(5)/4-sqrt(5)/4*log(3/2+sqrt(5)/2) ; evalf(%) ; %t A200138 RealDigits[ -PolyGamma[4/5], 10, 87] // First (* _Jean-François Alcover_, Feb 20 2013 *) %o A200138 (PARI) -psi(4/5) \\ _Charles R Greathouse IV_, Nov 22 2011 %Y A200138 Cf. A020759, A047787, A020777, A200134-A200137. %K A200138 cons,nonn %O A200138 0,1 %A A200138 _R. J. Mathar_, Nov 13 2011