a(n) is the maximum number of strong sub-tournaments in an n-tournament.

Terms

a(0) =0a(1) =0a(2) =0a(3) =1a(4) =3a(5) =11a(6) =27a(7) =71a(8) =159a(9) =367a(10) =783a(11) =1695a(12) =3519a(13) =7359a(14) =15039a(15) =30847a(16) =62463a(17) =126719a(18) =255231a(19) =514559a(20) =1033215a(21) =2075647a(22) =4160511a(23) =8341503a(24) =16703487a(25) =33452031a(26) =66949119a(27) =133996543a(28) =268091391a(29) =536395775