For n > 2, a(n) = smallest square > a(n-1) and congruent to a(n-1) (mod a(n-2)).

A087361

For n > 2, a(n) = smallest square > a(n-1) and congruent to a(n-1) (mod a(n-2)).

Terms

    a(0) =1a(1) =4a(2) =9a(3) =25a(4) =169a(5) =1369a(6) =17424a(7) =1530169a(8) =10067929

External references