Row sums of A375546.

Terms

a(0) =1a(1) =1a(2) =4a(3) =12a(4) =42a(5) =120a(6) =415a(7) =1253a(8) =4078a(9) =12771a(10) =40518a(11) =126632a(12) =397349a(13) =1236040a(14) =3841920a(15) =11889451a(16) =36715750a(17) =113045937a(18) =347354344a(19) =1064918707a(20) =3258926926a(21) =9955461682a(22) =30365091843a(23) =92481086124a(24) =281292738961a(25) =854535966415