Odd Padovan numbers.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =3a(6) =5a(7) =7a(8) =9a(9) =21a(10) =37a(11) =49a(12) =65a(13) =151a(14) =265a(15) =351a(16) =465a(17) =1081a(18) =1897a(19) =2513a(20) =3329a(21) =7739a(22) =13581a(23) =17991a(24) =23833a(25) =55405a(26) =97229a(27) =128801a(28) =170625a(29) =396655