Row sums of triangle A117425.

Terms

a(0) =1a(1) =2a(2) =5a(3) =15a(4) =51a(5) =192a(6) =781a(7) =3416a(8) =15925a(9) =78596a(10) =408338a(11) =2224366a(12) =12650993a(13) =74876951a(14) =459783612a(15) =2922921342a(16) =19192162341a(17) =129864598567a(18) =903840021982