Row sums of A181851.

Terms

a(0) =1a(1) =1a(2) =3a(3) =8a(4) =19a(5) =49a(6) =112a(7) =273a(8) =631a(9) =1450a(10) =3327a(11) =7571a(12) =17170a(13) =38519a(14) =85951a(15) =190392a(16) =419759a(17) =921189a(18) =2013874a(19) =4385889a(20) =9516273a(21) =20577618a(22) =44352499a(23) =95324853a(24) =204307052a(25) =436768151a(26) =931448065a(27) =1981879262a(28) =4207887155a(29) =8916102661