a(n) = floor(1/(n-1) * Sum_{k=1..n-1} a(k)^(n/k)), given a(0)=1, a(1)=2, a(2)=5.

Terms

a(0) =1a(1) =2a(2) =5a(3) =9a(4) =19a(5) =41a(6) =87a(7) =185a(8) =392a(9) =831a(10) =1762a(11) =3735a(12) =7923a(13) =16810a(14) =35678a(15) =75750a(16) =160878a(17) =341780a(18) =726323a(19) =1543984a(20) =3283096a(21) =6983143a(22) =14857421a(23) =31619882a(24) =67313293a(25) =143339183a(26) =305318041a(27) =650524459a(28) =1386432629a(29) =2955686825