Row sums of triangle A261897.

Terms

a(0) =1a(1) =2a(2) =3a(3) =6a(4) =12a(5) =22a(6) =44a(7) =88a(8) =176a(9) =352a(10) =697a(11) =1394a(12) =2788a(13) =5576a(14) =11152a(15) =22304a(16) =44608a(17) =89172a(18) =178344a(19) =356688a(20) =713376a(21) =1426752a(22) =2853504a(23) =5707008a(24) =11414016a(25) =22828032a(26) =45655636a(27) =91311272a(28) =182622544a(29) =365245088