Number of 6-good trees with n nodes.

Terms

a(0) =1a(1) =1a(2) =2a(3) =6a(4) =24a(5) =120a(6) =721a(7) =5075a(8) =41146a(9) =379764a(10) =3955413a(11) =46147101a(12) =598757159a(13) =8574963397a(14) =134469746411