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 A114886 #6 Feb 16 2025 08:33:00 %S A114886 1,2,3,4,5,6,7,8,9,10,11,12,13,15,16,17,18,19,20,21,22,23,24,26,27,29, %T A114886 30,31,32,33,34,36,37,38,39,40,42,43,44,45,47,48,49,50,51,52,53,55,56, %U A114886 57,58,59,60,61,62,63,65,66,67,68,69,70,71,74,75,76,77,78,80,81,82,84 %N A114886 Root numbers n after which the absolute value of (the extremum of XiFunction[1/2+I t[n]] between t[n] and t[n+1]) decreases. %H A114886 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/LehmersPhenomenon.html">Lehmer's Phenomenon</a> %e A114886 Positions t* and local extrema XiFunction[1/2+I t* ] are (15.585711332048758, -0.0008015627529657927), (22.097389559314916, 7.757611157791071*^-6), (26.263654620110252, -6.694515560853731*^-7), (31.179346409935437, 8.08323128338739*^-9), (34.16924408063743, -2.3158407239416737*^-9), (38.51676783435905, 7.095608517717453*^-11), ... %K A114886 nonn %O A114886 1,2 %A A114886 _Eric W. Weisstein_, Jan 03 2006