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 A369994 #9 Mar 31 2024 08:45:28
%S A369994 2,6,2,9,4,4,1,3,8,2,8,6,9,8,8,2,5,2,4,9,3,9,7,6,1,2,9,4,7,5,7,9,5,7,
%T A369994 4,2,1,7,3,6,6,7,6,4,3,5,9,0,8,0,3,4,7,8,8,3,0,2,3,7,1,4,0,1,8,6,4,6,
%U A369994 6,1,0,2,7,5,2,6,3,0,4,0,5,5,6,0,0,6,8,0,7,2,9,1,7,3,6,4,8,7,5
%N A369994 Decimal expansion of Product_{k>=2} (1 - 1/k!!).
%e A369994 0.26294413828698825249397612947579574217...
%Y A369994 Cf. A006882, A282529, A370413.
%K A369994 nonn,cons
%O A369994 0,1
%A A369994 _Ilya Gutkovskiy_, Mar 30 2024