Row sums of triangle A131321.

Terms

a(0) =1a(1) =1a(2) =3a(3) =5a(4) =12a(5) =23a(6) =51a(7) =103a(8) =221a(9) =456a(10) =965a(11) =2009a(12) =4227a(13) =8833a(14) =18540a(15) =38803a(16) =81363a(17) =170399a(18) =357145a(19) =748176a(20) =1567849a(21) =3284833a(22) =6883059a(23) =14421533a(24) =30218028a(25) =63314735a(26) =132664227a(27) =277968871a(28) =582428789a(29) =1220356440