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 A386590 #20 Aug 03 2025 21:05:50
%S A386590 8,1,3,2,7,8,4,0,5,2,6,1,8,9,1,6,5,6,5,2,1,4,4,7,8,2,0,0,7,3,5,2,5,5,
%T A386590 7,4,4,8,1,5,7,0,5,2,4,5,2,9,0,0,5,8,4,2,6,0,5,0,6,6,9,7,3,4,4,2,0,1,
%U A386590 7,8,2,9,7,2,4,4,1,0,2,1,7,1,0,1,9,9,1,4,6,5,2,2,9,5,4,0,3,3,7,0,9,8,3,8,5
%N A386590 Decimal expansion of the absolute value of zeta(1/4).
%F A386590 Sum_{k>=1} (-1)^(k+1)/k^(1/4) = |Zeta(1/4)| * (2^(3/4)-1) = this * (A011006 -1).
%e A386590 0.81327840526189165652144782007352557448157...
%p A386590 evalf(abs(Zeta(1/4)), 120); # _Alois P. Heinz_, Jul 26 2025
%t A386590 RealDigits[-Zeta[1/4], 10, 105][[1]]
%o A386590 (PARI) -zeta(1/4) \\ _Stefano Spezia_, Aug 03 2025
%Y A386590 Cf. A251734, A385423.
%K A386590 nonn,cons
%O A386590 0,1
%A A386590 _Artur Jasinski_, Jul 26 2025