Triangle read by rows: the numerators of the Lucas triangle.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =1a(6) =1a(7) =4a(8) =4a(9) =1a(10) =1a(11) =7a(12) =28a(13) =7a(14) =1a(15) =1a(16) =11a(17) =77a(18) =77a(19) =11a(20) =1a(21) =1a(22) =18a(23) =66a(24) =231a(25) =66a(26) =18a(27) =1a(28) =1a(29) =29