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 A082035 #7 Jan 29 2019 17:50:20
%S A082035 1,7,42,258,1752,13320,113040,1063440,11007360,124467840,1527724800,
%T A082035 20237817600,287879961600,4377595622400,70875950745600,
%U A082035 1217444836608000,22115388911616000,423623726862336000,8534364149735424000
%N A082035 a(n) = (4n^2+2n+1) * n!.
%C A082035 A row of the number array A082038.
%F A082035 a(n) = 4*A002775(n) + A007680(n).
%t A082035 Table[(4n^2+2n+1)n!,{n,0,20}] (* _Harvey P. Dale_, Jul 15 2011 *)
%Y A082035 Cf. A001564, A082036.
%K A082035 easy,nonn
%O A082035 0,2
%A A082035 _Paul Barry_, Apr 02 2003