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 A143440 #13 Feb 16 2025 08:33:08
%S A143440 1,2,2,8,3,4,8,8,6,7,0,3,8,5,7,5,1,1,2,5,8,6,8,7,8,3,8,9,8,6,0,0,9,6,
%T A143440 8,2,4,9,9,0,3,2,7,9,1,5,7,6,9,5,2,6,7,4,6,7,9,6,2,9,8,3,1,5,1,0,3,0,
%U A143440 8,2,5,4,5,1,7,7,8,3,2,8,8,6,4,8,0,1,9,9,9,3,6,3,2,4,2,5,6,1,1,9,6,4,0,7,7
%N A143440 Decimal expansion of the maximum value of the q-Pochhammer symbol along [ -1, 1].
%H A143440 G. C. Greubel, <a href="/A143440/b143440.txt">Table of n, a(n) for n = 1..1000</a>
%H A143440 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/q-PochhammerSymbol.html">q-Pochhammer Symbol</a>
%e A143440 1.2283488670385751125...
%t A143440 q0 = q /. FindRoot[QPochhammer'[q] == 0, {q, -1/2}, WorkingPrecision -> 300]; RealDigits[QPochhammer[q0], 10, 105] // First (* _Jean-François Alcover_, Dec 05 2013 *)
%Y A143440 Cf. A143441, A242168, A258232.
%K A143440 nonn,cons
%O A143440 1,2
%A A143440 _Eric W. Weisstein_, Aug 14 2008