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 A334365 #17 Nov 26 2024 13:21:35
%S A334365 1,6,6,8,6,5,1,0,4,4,1,7,9,5,2,4,7,5,1,1,4,9,3,9,7,6,4,4,8,2,6,5,0,9,
%T A334365 0,7,7,6,6,5,7,7,4,6,0,2,6,7,8,6,2,4,0,2,2,7,8,4,0,6,8,5,1,5,1,0,6,9,
%U A334365 8,5,8,1,4,5,6,5,4,2,1,1,3,3,2,9,2,3,8,8,5,4,2,7,3,2,8,5,3,4,7,9,9,3,0,3,5,2,4,7,7,0,9
%N A334365 Decimal expansion of Sum_{k>=0} 1/(4*k+3)!.
%H A334365 Michael I. Shamos, <a href="http://euro.ecom.cmu.edu/people/faculty/mshamos/cat.pdf">A catalog of the real numbers</a>, (2011). See p. 209.
%H A334365 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>.
%F A334365 Equals (sinh(1) - sin(1))/2.
%e A334365 1/3! + 1/7! + 1/11! + ... = 0.1668651044179524751...
%t A334365 RealDigits[(Sinh[1] - Sin[1])/2, 10, 111] [[1]]
%o A334365 (PARI) suminf(k=0, 1/(4*k+3)!) \\ _Michel Marcus_, Apr 25 2020
%Y A334365 Cf. A001113, A049469, A073742, A332890, A334363, A334364.
%K A334365 nonn,cons
%O A334365 0,2
%A A334365 _Ilya Gutkovskiy_, Apr 24 2020