T(n,[ n/2 ]), T given by A026714.

Terms

a(0) =1a(1) =1a(2) =3a(3) =5a(4) =13a(5) =25a(6) =63a(7) =128a(8) =319a(9) =664a(10) =1647a(11) =3468a(12) =8583a(13) =18179a(14) =44941a(15) =95486a(16) =235913a(17) =502130a(18) =1240173a(19) =2642373a(20) =6524919a(21) =13910933a(22) =34346785a(23) =73254357a(24) =180855499a(25) =385819274a(26) =952494047a(27) =2032271705a(28) =5017037457a(29) =10705592360