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 A367730 #7 Nov 29 2023 11:43:58
%S A367730 6,9,3,4,3,6,7,8,8,1,7,9,1,8,3,1,9,0,0,9,7,7,6,0,4,6,3,3,3,3,5,4,3,9,
%T A367730 3,1,9,7,3,2,0,9,9,5,6,2,5,3,8,6,6,5,5,5,0,9,3,4,4,4,6,5,8,3,6,6,9,3,
%U A367730 2,6,0,3,5,4,9,3,3,5,5,6,4,1,2,9,9,8,2,1,2,7,3,0,3,2,9,0,1,6,3
%N A367730 Decimal expansion of BesselJ(0,2/sqrt(3)).
%F A367730 Equals Sum_{k>=0} 1 / ((-3)^k * k!^2).
%e A367730 0.69343678817918319009776046333354393...
%t A367730 RealDigits[BesselJ[0, 2/Sqrt[3]], 10, 99][[1]]
%o A367730 (PARI) besselj(0,2/sqrt(3)) \\ _Michel Marcus_, Nov 29 2023
%Y A367730 Cf. A091681, A092615, A334380, A334383, A367729.
%K A367730 nonn,cons
%O A367730 0,1
%A A367730 _Ilya Gutkovskiy_, Nov 28 2023