Number of trees with n nodes and 12 leaves.

Terms

a(0) =1a(1) =6a(2) =36a(3) =199a(4) =984a(5) =4433a(6) =18257a(7) =69390a(8) =245105a(9) =810418a(10) =2522646a(11) =7432876a(12) =20825678a(13) =55717629a(14) =142862730a(15) =352212459a(16) =837368658a(17) =1924861589a(18) =4288250970a(19) =9278750495a(20) =19537503288a(21) =40103712085a(22) =80377128541