Row sums of A373424.

Terms

a(0) =1a(1) =1a(2) =2a(3) =4a(4) =8a(5) =17a(6) =39a(7) =97a(8) =261a(9) =756a(10) =2344a(11) =7738a(12) =27070a(13) =99946a(14) =388085a(15) =1579914a(16) =6725192a(17) =29860100a(18) =137991971a(19) =662439670a(20) =3297635881a(21) =16995183941a(22) =90547999761a(23) =498054983333