Triangle read by rows: Number T(n,k) of 2-colored binary rooted trees with n nodes and exactly k <= n nodes of a specific color.

A241555

Triangle read by rows: Number T(n,k) of 2-colored binary rooted trees with n nodes and exactly k <= n nodes of a specific color.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =2a(7) =5a(8) =5a(9) =2a(10) =3a(11) =11a(12) =16a(13) =11a(14) =3a(15) =6a(16) =26a(17) =50a(18) =50a(19) =26a(20) =6a(21) =11a(22) =60a(23) =143a(24) =188a(25) =143a(26) =60a(27) =11a(28) =23a(29) =142

External references