Row sums of triangle A142963.

Terms

a(0) =1a(1) =3a(2) =15a(3) =111a(4) =1071a(5) =12663a(6) =177255a(7) =2866671a(8) =52587711a(9) =1078805223a(10) =24470577495a(11) =608113846431