Values of A196189 such that both k and A196189(k) are odd.

Terms

a(0) =3a(1) =7a(2) =15a(3) =35a(4) =57a(5) =99a(6) =429a(7) =445a(8) =731a(9) =5151a(10) =12619a(11) =30061a(12) =68517a(13) =111435a(14) =766963a(15) =5272667a(16) =5892979a(17) =10855425a(18) =11475773a(19) =34427205a(20) =200476101a(21) =879640035a(22) =879640081a(23) =5987618771a(24) =9464300559a(25) =13456046373a(26) =33028477513a(27) =85307471025