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 A387065 #18 Aug 24 2025 16:24:30
%S A387065 0,0,3,9,8,6,4,4,1,6,6,3,6,7,0,7,5,0,4,3,1,7,1,0,4,0,5,3,5,2,8,2,0,4,
%T A387065 2,9,4,2,4,1,7,1,5,4,8,4,3,4,1,7,2,8,9,6,5,6,5,6,0,6,8,0,2,8,3,1,0,6,
%U A387065 4,3,1,3,4,5,1,9,6,2,6,7,7,9,6,0,1,9,4,1,3,5,0,0,6,7,0,3,9,9,0,7,6,8,2,8,1,4,5
%N A387065 Decimal expansion of the value of the Riemann zeta function at 2nd extremum (negated).
%H A387065 Artur Jasinski, <a href="/A387065/a387065_1.txt">Values of Riemann zeta function at 1000 succesive negative extrema</a>.
%F A387065 Equals zeta(-A387052).
%e A387065 -0.00398644166367075043171...
%t A387065 kk = x /. FindRoot[Zeta'[x] == 0, {x, -5}, WorkingPrecision -> 110]; dd =
%t A387065 RealDigits[Zeta[kk], 10, 105][[1]]; Flatten[Prepend[dd, {0, 0}]]
%Y A387065 Cf. A271855, A271856, A387052.
%K A387065 nonn,cons,new
%O A387065 0,3
%A A387065 _Artur Jasinski_, Aug 15 2025