Row sums of triangle A128320.

Terms

a(0) =1a(1) =2a(2) =8a(3) =31a(4) =159a(5) =955a(6) =6677a(7) =51308a(8) =429868a(9) =3847548a(10) =36599474a(11) =366515450a(12) =3848812068a(13) =42154442638a(14) =480103999452