Row sums of A059346.

Terms

a(0) =1a(1) =1a(2) =4a(3) =11a(4) =36a(5) =117a(6) =393a(7) =1339a(8) =4630a(9) =16193a(10) =57201a(11) =203799a(12) =731602a(13) =2643903a(14) =9611748a(15) =35130195a(16) =129018798a(17) =475907913a(18) =1762457595a(19) =6550726731a(20) =24428808690a(21) =91377474411a(22) =342763939656