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 A362219 #7 May 09 2023 00:30:37
%S A362219 4,0,6,7,5,8,8,8,6,5,7,6,5,8,6,2,7,9,0,9,1,7,0,8,5,0,2,5,3,1,2,4,1,1,
%T A362219 3,1,9,0,6,8,3,0,0,6,7,4,4,9,3,9,5,7,9,2,2,6,3,7,2,6,3,4,3,6,5,5,1,4,
%U A362219 6,5,8,6,2,6,6,0,5,4,7,1,0,1,5,5,9,0,2,8,2,3,7,7,0,4,4,0,0,1,1,6,8,2,0
%N A362219 Decimal expansion of smallest positive solution to tan(x) = arctan(x).
%F A362219 Equals tan(A362220).
%e A362219 4.067588865765862790917085025312411319068300674493957922637263436551...
%t A362219 RealDigits[FindRoot[Tan[x] == ArcTan[x], {x, 4}, WorkingPrecision -> 105][[1, 2]]][[1]]
%o A362219 (PARI) solve(x=4, 4.5, tan(x)-atan(x)) \\ _Michel Marcus_, Apr 12 2023
%Y A362219 Cf. A115365, A362220.
%K A362219 cons,nonn
%O A362219 1,1
%A A362219 _Wolfe Padawer_, Apr 11 2023