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