a(1)=a(2)=1, a(n+1) = (a(n)^5 +1)/a(n-1).A003820a(1)=a(2)=1, a(n+1) = (a(n)^5 +1)/a(n-1).Terms a(0) =1a(1) =1a(2) =2a(3) =33a(4) =19567697External referencesoeis: A003820