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 A370424 #9 Mar 31 2024 08:45:04
%S A370424 6,1,5,5,8,0,0,2,8,0,0,8,3,8,9,1,4,1,1,3,8,5,2,4,5,0,0,2,7,4,5,5,3,9,
%T A370424 6,2,2,6,1,3,1,7,2,1,3,1,3,6,5,9,3,3,1,7,5,3,0,9,1,5,7,2,4,6,9,8,2,2,
%U A370424 6,6,9,5,9,6,7,3,2,0,1,4,4,3,3,5,2,7,8,5,7,2,2,8,6,4,7,3,4,5,7,8
%N A370424 Decimal expansion of Product_{k>=2} (1 - 1/(2*k-1)!!).
%e A370424 0.61558002800838914113852450027455396226...
%Y A370424 Cf. A001147, A282529, A370465.
%K A370424 nonn,cons
%O A370424 0,1
%A A370424 _Ilya Gutkovskiy_, Mar 30 2024