Row sums of A320902.

Terms

a(0) =1a(1) =2a(2) =4a(3) =10a(4) =29a(5) =93a(6) =314a(7) =1086a(8) =3797a(9) =13346a(10) =47063a(11) =166416a(12) =590090a(13) =2098694a(14) =7488519a(15) =26813197a(16) =96354259a(17) =347536624a(18) =1258206722a(19) =4572144768a(20) =16675669693a(21) =61039087954a(22) =224207709627a(23) =826341998343