Largest order of automorphism group of a tournament with n nodes.

Terms

a(0) =1a(1) =1a(2) =3a(3) =3a(4) =5a(5) =9a(6) =21a(7) =21a(8) =81a(9) =81a(10) =81a(11) =243a(12) =243a(13) =441a(14) =1215a(15) =1701a(16) =1701a(17) =6561a(18) =6561a(19) =6561a(20) =45927a(21) =45927a(22) =45927a(23) =137781a(24) =137781a(25) =229635a(26) =1594323a(27) =1594323a(28) =1594323a(29) =4782969