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 A248674 #11 May 15 2021 03:53:19 %S A248674 1,7,9,7,2,2,9,9,1,4,4 %N A248674 Decimal expansion of the solution to the Lane-Emden equation for a sphere of polytropic index n = 4. %D A248674 Steven R. Finch, Mathematical Constants II, Cambridge University Press, 2018, section 2.14, pp. 338-339. %D A248674 Eric Poisson and Clifford M. Will, Gravity: Newtonian, Post-Newtonian, Relativistic, Cambridge University Press, 2014, p. 74. %H A248674 Wikipedia, <a href="http://en.wikipedia.org/wiki/Lane-Emden_equation">Lane-Emden equation</a>. %e A248674 1.7972299144... %Y A248674 Cf. A002194 (n=0), A000796 (n=1), A248672 (n=2), A248673 (n=3), A002194 (n=5). %K A248674 nonn,cons,more %O A248674 1,2 %A A248674 _Arkadiusz Wesolowski_, Oct 11 2014 %E A248674 a(6) corrected and more terms added from Finch (2018) by _Amiram Eldar_, May 15 2021