a(n) = Sum_{k=1..n-1} k*A088459(n, k).

Terms

a(0) =0a(1) =2a(2) =15a(3) =82a(4) =405a(5) =1891a(6) =8554a(7) =37850a(8) =164985a(9) =710893a(10) =3036726a(11) =12880847a(12) =54331550a(13) =228089538a(14) =953811972a(15) =3975120810a(16) =16519242465a(17) =68474376025a(18) =283211458750