Number of n-node rooted identity trees with thinning limbs and root outdegree (branching factor) 9.
A245128
Number of n-node rooted identity trees with thinning limbs and root outdegree (branching factor) 9.
Terms
- a(0) =6a(1) =32a(2) =140a(3) =490a(4) =1582a(5) =4679a(6) =13207a(7) =35579a(8) =92848a(9) =235364a(10) =583368a(11) =1417164a(12) =3386221a(13) =7972754a(14) =18536344a(15) =42613503a(16) =97001737a(17) =218855237a(18) =489889224a(19) =1088756521a(20) =2404139499a(21) =5277595013a(22) =11523611147a(23) =25038756870a(24) =54160808489a(25) =116670213947a(26) =250366691420a(27) =535375247787
External references
- oeis: A245128