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 A346437 #22 Jun 04 2023 01:43:51
%S A346437 9,9,9,8,0,1,5,8,7,3,1,3,0,5,8,0,4,7,1,6,5,4,5,8,3,7,0,9,5,5,3,2,7,6,
%T A346437 2,7,5,7,2,1,0,9,1,8,0,5,7,4,8,8,0,9,5,6,1,4,9,7,1,2,9,4,1,3,9,4,0,9,
%U A346437 3,6,7,6,4,4,6,9,8,5,8,1,1,0,5,7,8,7,7
%N A346437 Decimal expansion of the constant Sum_{k>=0} (-1)^k/(7*k)!.
%H A346437 Michael I. Shamos, <a href="http://euro.ecom.cmu.edu/people/faculty/mshamos/cat.pdf">A catalog of the real numbers</a> (2011).
%e A346437 0.99980158731305804716545837...
%t A346437 RealDigits[HypergeometricPFQ[{}, {1/7, 2/7, 3/7, 4/7, 5/7, 6/7}, -1/7^7], 10, 120][[1]] (* _Amiram Eldar_, Jun 04 2023 *)
%o A346437 (PARI) sumalt(k=0, (-1)^k/(7*k)!) \\ _Michel Marcus_, Jul 18 2021
%Y A346437 Cf. A068985, A049470, A346441, A346440, A346439, A346438, A346437, A346436, A346435, A196498.
%K A346437 cons,nonn
%O A346437 0,1
%A A346437 _Sean A. Irvine_, Jul 17 2021