Functions of n points with no symmetries.

Terms

a(0) =1a(1) =1a(2) =3a(3) =6a(4) =15a(5) =34a(6) =82a(7) =193a(8) =464a(9) =1111a(10) =2683a(11) =6482a(12) =15730a(13) =38232a(14) =93177a(15) =227458a(16) =556323a(17) =1362639a(18) =3342504a(19) =8209130a(20) =20185204a(21) =49684404a(22) =122413446a(23) =301870406a(24) =745019874a(25) =1840103575a(26) =4548008306a(27) =11248190948