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 A340485 #20 Mar 09 2024 08:19:02 %S A340485 1,0,7,3,2,5,3,7,1,6,4,2,0,3,0,2,3,9,6,9,5,0,6,0,2,4,8,5,0,2,1,8,2,8, %T A340485 8,0,3,2,4,7,2,7,9,8,9,8,2,0,4,3,6,1,5,7,4,8,7,9,3,3,8,9,2,4,6,9,8,2, %U A340485 7,9,9,0,2,0,8,7,4,8,6,9,4,5,1,6,8,5,3,4,3,9,9,1,9,9,3,2,6,1,2,5,3,9,7,1,0,7 %N A340485 Decimal expansion of Sum_{k>=2} log(k)/(k^2-1)^2. %F A340485 Equals -Sum_{i>=1} i*zeta'(2*i+2) = A261506 - Sum_{i>=2} i*zeta'(2*i+2). %e A340485 0.10732537164203023969506024850218288032472798982043615... %p A340485 evalf(-Zeta'(4) - Sum(i * Zeta'(2*i+2), i = 2 .. infinity), 120); # _Amiram Eldar_, Mar 09 2024 %o A340485 (PARI) sumpos(k=2, log(k)/(k^2-1)^2) \\ _Michel Marcus_, Jan 09 2021 %o A340485 (PARI) -zeta'(4) - sumpos(i=2, i*zeta'(2*i+2)) \\ _Amiram Eldar_, Mar 09 2024 %Y A340485 Cf. A261506, A340440, A340484. %K A340485 nonn,cons %O A340485 0,3 %A A340485 _R. J. Mathar_, Jan 09 2021 %E A340485 More terms from _Amiram Eldar_, Mar 09 2024