Number of rooted planar trees where any 2 subtrees extending from same node have a different number of nodes.

A032010

Number of rooted planar trees where any 2 subtrees extending from same node have a different number of nodes.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =2a(4) =4a(5) =9a(6) =23a(7) =62a(8) =164a(9) =449a(10) =1263a(11) =3636a(12) =10500a(13) =30859a(14) =90895a(15) =271178a(16) =810918a(17) =2447715a(18) =7406439a(19) =22589066a(20) =68974940a(21) =211989119a(22) =652180385a(23) =2016872920a(24) =6242930834a(25) =19412141273a(26) =60390977831a(27) =188627507266

External references