Number of unlabeled rooted identity trees with n nodes in which the branches of any node with more than one branch have empty intersection.
A316500
Number of unlabeled rooted identity trees with n nodes in which the branches of any node with more than one branch have empty intersection.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =3a(5) =6a(6) =11a(7) =22a(8) =46a(9) =96a(10) =205a(11) =442a(12) =976a(13) =2146a(14) =4789a(15) =10719a(16) =24202a(17) =54841a(18) =124967a(19) =285724a(20) =656011a(21) =1510929a(22) =3491151a(23) =8088692a(24) =18790084
External references
- oeis: A316500