Row sums of A306234.

Terms

a(0) =0a(1) =1a(2) =3a(3) =12a(4) =53a(5) =282a(6) =1753a(7) =12566a(8) =102233a(9) =931746a(10) =9408941a(11) =104310042a(12) =1259745925a(13) =16464164978a(14) =231539899697