{2n+1}_{2n+1}.

Terms

a(0) =1a(1) =3a(2) =5a(3) =7a(4) =9a(5) =12a(6) =16a(7) =20a(8) =24a(9) =28a(10) =43a(11) =49a(12) =55a(13) =61a(14) =67a(15) =94a(16) =102a(17) =110a(18) =118a(19) =126a(20) =165a(21) =175a(22) =185a(23) =195a(24) =205a(25) =256a(26) =268a(27) =280a(28) =292a(29) =304