Number of compound rooted windmills with n nodes where any 2 submills extending from the same node are of different sizes.

A032143

Number of compound rooted windmills with n nodes where any 2 submills extending from the same node are of different sizes.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =2a(4) =3a(5) =6a(6) =13a(7) =28a(8) =60a(9) =135a(10) =316a(11) =731a(12) =1735a(13) =4133a(14) =9937a(15) =24133a(16) =58820a(17) =144227a(18) =355966a(19) =881868a(20) =2192529a(21) =5479166a(22) =13717843a(23) =34474835a(24) =86848986a(25) =219454215a(26) =555371300a(27) =1409893698a(28) =3583579216a(29) =9130512970

External references