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 A284868 #7 Feb 16 2025 08:33:43 %S A284868 2,5,8,8,1,9,4,0,3,7,9,2,8,0,6,7,9,8,4,0,5,1,8,3,5,6,0,1,8,9,2,0,3,9, %T A284868 6,3,4,7,9,0,9,1,1,3,8,3,5,4,9,3,4,5,8,2,2,1,0,0,0,1,8,1,3,8,5,6,1,0, %U A284868 2,7,7,2,6,7,6,7,9,0,2,8,0,6,5,4,1,9,6,4,0,5,8,2,7,2,7,5,3,8,4,3,1,3,3,7,1 %N A284868 Decimal expansion of the derivative Ai'(0) (negated), where Ai is the Airy function of the first kind. %H A284868 Simon Plouffe, <a href="http://plouffe.fr/simon/constants/airyc2.txt">Airy Functions Constant C2</a> %H A284868 Eric Weisstein's MathWorld, <a href="https://mathworld.wolfram.com/AiryFunctions.html">Airy Functions</a> %H A284868 Wikipedia, <a href="https://en.wikipedia.org/wiki/Airy_function">Airy Function</a> %F A284868 Ai'(0) = -1/(3^(1/3)*Gamma(1/3)). %e A284868 -0.2588194037928067984051835601892039634790911383549345822100018138561... %t A284868 RealDigits[AiryAi'[0], 10, 105][[1]] %o A284868 (PARI) -derivnum(x=0,airy(x)[1]) \\ _Charles R Greathouse IV_, Apr 26 2019 %Y A284868 Cf. A096714, A096715, A269892, A269893, A073005 (Gamma(1/3)), A284867 (Ai(0)). %K A284868 nonn,cons %O A284868 0,1 %A A284868 _Jean-François Alcover_, Apr 04 2017