a(1)=5; a(n) is concatenation of squares of digits in a(n-1) (in base 10).

A082026

a(1)=5; a(n) is concatenation of squares of digits in a(n-1) (in base 10).

Terms

    a(0) =5a(1) =25a(2) =425a(3) =16425a(4) =13616425a(5) =193613616425

External references