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 A364355 #32 Aug 26 2023 15:37:32
%S A364355 5,4,1,9,7,9,8,7,1,6,9,4,8,9,0,6,0,2,4,4,3,3,2,2,7,8,7,7,9,0,9,0,4,6,
%T A364355 8,8,0,5,5,8,2,4,2,8,0,2,9,2,7,9,3,8,4,2,7,9,5,6,1,4,5,5,1,9,4,0,0,0,
%U A364355 0,8,1,5,8,6,3,9,1,7,2,7,4,4,0,4,6,0,2,1,5,2,1,1,5,1,5,5,5,8,8,4,8,5,5,6,6
%N A364355 Decimal expansion of the unique value of x such that Gamma(-x + i*sqrt(1-x^2)) is a real number and -1 < x < 1.
%C A364355 Gamma(-A364355 + i*sqrt(1-A364355^2)) = -0.6749332470449905963531... see A364356.
%C A364355 Also decimal expansion of the unique value of x in the range -1 < x < 1 for which the function Re(Gamma(-x + i*sqrt(1-x^2)))/abs(Gamma(-x + i*sqrt(1-x^2))) is minimized.
%e A364355 x = 0.54197987169489060244332278779...
%t A364355 RealDigits[x /. FindRoot[Im[Gamma[-x + I Sqrt[1 - x^2]]], {x, 0.5}, WorkingPrecision -> 106]][[1]]
%Y A364355 Cf. A090986, A212877, A212878, A212880, A212879, A364356.
%K A364355 nonn,cons
%O A364355 0,1
%A A364355 _Artur Jasinski_, Jul 20 2023