Row sums of the convolution triangle of the Motzkin numbers (A202710).

Terms

a(0) =1a(1) =1a(2) =3a(3) =9a(4) =28a(5) =88a(6) =279a(7) =889a(8) =2843a(9) =9115a(10) =29279a(11) =94183a(12) =303294a(13) =977522a(14) =3152709a(15) =10173671a(16) =32844544a(17) =106073200a(18) =342671109a(19) =1107278239a(20) =3578704532a(21) =11568322736a(22) =37400611581a(23) =120931966547a(24) =391065616195