Row sums of number triangle A107027.

Terms

a(0) =1a(1) =3a(2) =5a(3) =9a(4) =19a(5) =49a(6) =155a(7) =591a(8) =2651a(9) =13689a(10) =80009a(11) =522193a(12) =3762273a(13) =29629483a(14) =252966249a(15) =2325176147a(16) =22874076091a(17) =239615657133