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 A349672 #7 Nov 27 2021 12:03:09
%S A349672 1,4,1,7,8,4,5,9,3,5,7,8,7,3,5,7,2,9,2,9,6,2,1,1,2,5,3,8,3,1,9,0,4,0,
%T A349672 9,2,3,4,3,9,3,2,2,5,6,6,4,7,3,2,9,0,5,7,9,7,0,5,9,8,8,4,9,1,4,8,7,1,
%U A349672 9,0,4,6,9,6,3,6,8,5,9,0,8,5,1,6,9,0,6,0,3,6,7,9,5,3,9,7,9,0,1
%N A349672 Decimal expansion of the unique solution to zeta(x) = 3 in (1, +oo).
%e A349672 zeta(1.41784593578735729296...) = 3.
%t A349672 (* following _Jean-François Alcover_'s Mathematica program for A107311 *) x /. FindRoot[ Zeta[x] == 3, {x, 2}, WorkingPrecision -> 102] // RealDigits // First
%o A349672 (PARI) solve(x=1.4, 1.5, zeta(x) - 3)
%Y A349672 Cf. A107311.
%K A349672 nonn,cons
%O A349672 1,2
%A A349672 _Jianing Song_, Nov 24 2021