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%I #4 Oct 10 2012 03:11:51
%S 1,0,1,-2,21,-454,25285,-3606504,1328522713,-1270747453940,
%T 3169192850406441,-20676520009454537480,353872602524737587995341,
%U -15925173912641846013871947522,1888348697181821236021540428910349,-591053910458037676348857289166882470064
%N Alternating row sums of triangle A090447.
%F a(n)=sum(A090447(n, m)*(-1)^m, m=0..n), n>=0.
%F A090450 (row sums).
%K sign,easy
%O 0,4
%A _Wolfdieter Lang_, Dec 23 2003