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 A057617 #11 Feb 02 2018 08:52:58
%S A057617 1,1,1,28,2,992,1,8128,2,130816
%N A057617 Order of subgroup bP_{m+1} of group Theta_m of h-cobordism classes of smooth homotopy m-spheres defined by those homotopy m-spheres which bound parallelizable (m+1)-manifolds, where m = 2n+1.
%C A057617 a(1) = 1 because the Poincaré conjecture is true.
%D A057617 M. A. Kervaire and J. W. Milnor, Groups of homotopy spheres: I. Ann. of Math. (2) 77 1963 504-537.
%D A057617 J. P. Levine, Lectures on groups of homotopy spheres. In Algebraic and geometric topology (New Brunswick, NJ, 1983), 62-95, Lecture Notes in Math., 1126, Springer, Berlin, 1985.
%H A057617 John W. Milnor, <a href="http://www.ams.org/notices/201106/rtx110600804p.pdf">Differential Topology Forty-six Years Later</a>, Notices Amer. Math. Soc. 58 (2011), 804-809.
%Y A057617 Cf. A001676.
%K A057617 nonn
%O A057617 0,4
%A A057617 _N. J. A. Sloane_, Feb 03 2002
%E A057617 a(0)-a(1) from _Andrey Zabolotskiy_, Feb 02 2018