One half of second column of Lucas bisection triangle (odd part).

Terms

a(0) =3a(1) =19a(2) =79a(3) =283a(4) =940a(5) =2982a(6) =9171a(7) =27581a(8) =81557a(9) =237995a(10) =687158a(11) =1966764a(12) =5588259a(13) =15780103a(14) =44323195a(15) =123920827a(16) =345062176a(17) =957403026a(18) =2647935987a(19) =7302634865a(20) =20087869313a(21) =55128445259a(22) =150971982314