a(0)=1; a(n+1) = 1 + f(a(n))^2, where f(x) is the largest prime factor of x (A006530).
A072268
a(0)=1; a(n+1) = 1 + f(a(n))^2, where f(x) is the largest prime factor of x (A006530).
Terms
- a(0) =1a(1) =2a(2) =5a(3) =26a(4) =170a(5) =290a(6) =842a(7) =177242a(8) =160802a(9) =2810a(10) =78962a(11) =9223370a(12) =5033760602
External references
- oeis: A072268