Number of n-node rooted identity trees with thinning limbs and root outdegree (branching factor) 5.

Terms

a(0) =1a(1) =4a(2) =11a(3) =28a(4) =70a(5) =160a(6) =366a(7) =804a(8) =1748a(9) =3734a(10) =7918a(11) =16597a(12) =34601a(13) =71628a(14) =147631a(15) =302857a(16) =619231a(17) =1261849a(18) =2564795a(19) =5200248a(20) =10522565a(21) =21252174a(22) =42854194a(23) =86286963a(24) =173517189a(25) =348523105a(26) =699311092a(27) =1401837776a(28) =2807733181a(29) =5619221464