Odd numbers to the left of the central elements of the (2,3)-Pascal triangle A029600.

Terms

a(0) =7a(1) =9a(2) =11a(3) =13a(4) =35a(5) =15a(6) =85a(7) =17a(8) =63a(9) =133a(10) =19a(11) =21a(12) =99a(13) =23a(14) =375a(15) =25a(16) =143a(17) =495a(18) =1155a(19) =27a(20) =3069a(21) =29a(22) =195a(23) =4719a(24) =7293a(25) =31a(26) =1001a(27) =7007a(28) =15873a(29) =33