Row sums of number triangle A122851.

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =6a(5) =11a(6) =24a(7) =51a(8) =122a(9) =291a(10) =756a(11) =1979a(12) =5526a(13) =15627a(14) =46496a(15) =140451a(16) =442194a(17) =1414931a(18) =4687212a(19) =15785451a(20) =54764846a(21) =193129659a(22) =698978136a(23) =2570480147a(24) =9672977706a(25) =36967490691a(26) =144232455524a(27) =571177352091