Row lengths of irregular triangle A381587.

Terms

a(0) =1a(1) =1a(2) =1a(3) =2a(4) =4a(5) =6a(6) =10a(7) =16a(8) =26a(9) =42a(10) =66a(11) =102a(12) =156a(13) =238a(14) =364a(15) =560a(16) =868a(17) =1354a(18) =2120a(19) =3322a(20) =5198a(21) =8112a(22) =12624a(23) =19602a(24) =30400a(25) =47138a(26) =73138a(27) =113598a(28) =176630a(29) =274858