Row sums of triangle in A090285.

Terms

a(0) =1a(1) =2a(2) =7a(3) =28a(4) =118a(5) =510a(6) =2235a(7) =9876a(8) =43870a(9) =195556a(10) =873814a(11) =3911168a(12) =17527904a(13) =78622982a(14) =352911939a(15) =1584927828a(16) =7120769526a(17) =32002212252a(18) =143859840114a(19) =646819996008