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

Terms

a(0) =3a(1) =3a(2) =3a(3) =11a(4) =3a(5) =3a(6) =17a(7) =3a(8) =57a(9) =3a(10) =147a(11) =77a(12) =23a(13) =3a(14) =3a(15) =29a(16) =3a(17) =155a(18) =3a(19) =605a(20) =187a(21) =35a(22) =3a(23) =1925a(24) =3a(25) =5291a(26) =2717a(27) =41a(28) =3a(29) =13013