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 A280868 #31 Feb 16 2025 08:33:39 %S A280868 5,5,2,0,0,7,8,1,1,0,2,8,6,3,1,0,6,4,9,5,9,6,6,0,4,1,1,2,8,1,3,0,2,7, %T A280868 4,2,5,2,2,1,8,6,5,4,7,8,7,8,2,9,0,9,8,5,3,7,5,7,5,5,2,0,3,8,1,4,4,2, %U A280868 9,0,8,2,9,1,9,3,7,2,5,4,4,3,0,9,3,6,1,0,4,9,1,3,9,9,5,4,3,4,8,3 %N A280868 Decimal expansion of the second zero of the Bessel function J_0(z). %C A280868 Calculated with Maple 16. %H A280868 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/BesselFunctionZeros.html">Bessel Function Zeros</a>. %H A280868 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a> %e A280868 5.5200781102863106495... %p A280868 Digits:=101; evalf(BesselJZeros(0,2)); %t A280868 RealDigits[BesselJZero[0, 2], 10, 100][[1]] (* _Amiram Eldar_, May 18 2021 *) %o A280868 (PARI) solve(x=5, 6, besselj(0,x)) \\ _Michel Marcus_, Jan 28 2017 %o A280868 (PARI) besseljzero(0,2) \\ _Charles R Greathouse IV_, Aug 09 2022 %Y A280868 Cf. A115368. %K A280868 nonn,cons %O A280868 1,1 %A A280868 _Thomas König_, Jan 28 2017