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A246385
Row sums of triangular matrix A246381 = exp(L) where L(n,k) = C(2*n, 2*k+1)/2.
5
1, 2, 6, 29, 192, 1657, 17980, 237361, 3726512, 68389537, 1445817556, 34786395633, 943051379976, 28561453705681, 959221358124188, 35493038942592705, 1438763782565929568, 63572690326212167745, 3048111097747838424484, 157947658466567381928913, 8813142621489336583785400
OFFSET
0,2
PROG
(PARI) {a(n)=local(L=matrix(n+1, n+1, r, c, if(r>=c, binomial(2*r-2, 2*c-1)/2)), A);
A=sum(m=0, n, L^m/m!); sum(k=0, n, A[n+1, k+1])}
for(n=0, 25, print1(a(n), ", "))
CROSSREFS
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Aug 24 2014
STATUS
approved