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 A048885 #15 Dec 17 2016 03:54:33 %S A048885 1,1,1,5,3,130,7570,355293682 %N A048885 Number of nonisomorphic orthogonal arrays OA(4n,4n-1,2,2). %C A048885 Equivalently, number of 3-(4*n,2*n,n-1) designs. %D A048885 A. S. Hedayat, N. J. A. Sloane and J. Stufken, Orthogonal Arrays, Springer-Verlag, NY, 1999, see Table 7.37 page 165. %H A048885 <a href="/index/Ha#Hadamard">Index entries for sequences related to Hadamard matrices</a> %Y A048885 Cf. A007299. %K A048885 nonn,nice,hard,more %O A048885 1,4 %A A048885 _N. J. A. Sloane_ %E A048885 a(7) computed by _N. J. A. Sloane_ %E A048885 a(8) from _Brendan McKay_, Feb 11 2012