Number of rooted trees with n nodes and 12 leaves.

Terms

a(0) =1a(1) =12a(2) =114a(3) =864a(4) =5541a(5) =30846a(6) =152596a(7) =681428a(8) =2783239a(9) =10504028a(10) =36943275a(11) =121939535a(12) =380006322a(13) =1123838933a(14) =3168283157a(15) =8547632165a(16) =22144509397a(17) =55260123176a(18) =133188829780a(19) =310810391963a(20) =703802522743