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 A373564 #9 Aug 20 2024 01:53:35
%S A373564 2,0,8,4,7,7,2,9,4,6,8,4,5,7,7,0,6,9,5,4,2,8,9,3,7,6,6,6,5,4,7,8,8,6,
%T A373564 1,6,9,2,9,9,6,9,4,8,5,0,8,8,6,0,9,7,2,4,8,7,0,9,4,6,2,3,4,7,6,1,3,3,
%U A373564 0,5,2,9,4,6,7,4,2,5,9,3,9,4,9,9,6,6,0,6,3,2,5,0,8
%N A373564 Decimal expansion of Sum_{k>=0} (-1)^k * log(4k+3)/(4k+3) .
%F A373564 this - A373563 = A242011.
%e A373564 0.2084772946845770695428937666547886...
%o A373564 (PARI) sumalt(k = 0, (-1)^k * log(4*k+3)/(4*k+3)) \\ _Amiram Eldar_, Aug 20 2024
%Y A373564 Cf. A091812, A373563, A242011.
%K A373564 nonn,cons
%O A373564 0,1
%A A373564 _R. J. Mathar_, Jun 10 2024