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%I #3 Aug 24 2014 19:54:55
%S 1,2,6,29,192,1657,17980,237361,3726512,68389537,1445817556,
%T 34786395633,943051379976,28561453705681,959221358124188,
%U 35493038942592705,1438763782565929568,63572690326212167745,3048111097747838424484,157947658466567381928913,8813142621489336583785400
%N Row sums of triangular matrix A246381 = exp(L) where L(n,k) = C(2*n, 2*k+1)/2.
%o (PARI) {a(n)=local(L=matrix(n+1,n+1,r,c,if(r>=c,binomial(2*r-2,2*c-1)/2)),A);
%o A=sum(m=0,n,L^m/m!);sum(k=0,n,A[n+1,k+1])}
%o for(n=0,25,print1(a(n),", "))
%Y Cf. A246381, A246382, A246383, A246384.
%K nonn
%O 0,2
%A _Paul D. Hanna_, Aug 24 2014