Row sums of triangle A131245.

Terms

a(0) =1a(1) =3a(2) =6a(3) =13a(4) =27a(5) =57a(6) =119a(7) =250a(8) =523a(9) =1097a(10) =2297a(11) =4815a(12) =10086a(13) =21137a(14) =44283a(15) =92793a(16) =194419a(17) =407378a(18) =853559a(19) =1788481a(20) =3747361a(21) =7851867a(22) =16451910a(23) =34471669a(24) =72228171a(25) =151339401a(26) =317100335a(27) =664418698a(28) =1392152131