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 A382821 #18 Aug 08 2025 03:09:50
%S A382821 1,4,7,9,1,8,4,3,3,0,0,2,1,6,4,5,3,7,0,9,2,8,6,7,8,5,5,3,8,3,7,8,8,5,
%T A382821 5,6,9,7,1,2,3,5,8,3,6,7,3,4,1,2,4,1,7,7,6,0,2,0,4,1,5,0,0,4,5,6,2,4,
%U A382821 1,4,3,9,8,2,7,9,1,3,4,5,0,3,1,0,4,2,3
%N A382821 Decimal expansion of (3/2) * (log(3) - 1).
%H A382821 I. S. Gradsteyn and I. M. Ryzhik, <a href="http://mathtable.com/gr/index.html">Table of integrals, series and products</a> (6th ed.), 2000, (eq. 0.236.2).
%F A382821 Equals Sum_{k>=1} 1/(k*(9*k^2-1)).
%F A382821 Equals Sum_{k>=1} zeta(2*k+1)/9^k. - _Amiram Eldar_, Aug 08 2025
%e A382821 0.147918433002164537092867855...
%t A382821 RealDigits[(3/2) * (Log[3] - 1), 10, 120][[1]] (* _Amiram Eldar_, Aug 08 2025 *)
%Y A382821 Cf. A016627, A016631, A145425.
%Y A382821 Essentially the same as A093064.
%K A382821 nonn,cons
%O A382821 0,2
%A A382821 _Sean A. Irvine_, Apr 05 2025