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%I #6 Sep 25 2024 09:43:28
%S 1,2,13,83,817,9065,121795,1850384,31964686,612859952,12980965588,
%T 300358150373,7548024748057,204624140789585,5954693801179750,
%U 185127523366125449,6124428454164394921,214815152433502078607
%N Alternating row sums of triangle A134146.
%F a(n) = Sum_{m=1..n} A134146(n,m)*(-1)^(m-1), n>=1.
%Y Cf. A134147 (row sums of A134146).
%K nonn,easy
%O 1,2
%A _Wolfdieter Lang_, Nov 13 2007