Number of fully anti-transitive rooted trees with n nodes.

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =6a(5) =11a(6) =27a(7) =60a(8) =152a(9) =376a(10) =968a(11) =2492a(12) =6549a(13) =17259a(14) =46000a(15) =123214a(16) =332304a(17) =900406a(18) =2451999a(19) =6703925