a(1) = 3; for n>1, a(n) is the smallest square > a(n-1) obtained by inserting digits into a(n-1).

A068177

a(1) = 3; for n>1, a(n) is the smallest square > a(n-1) obtained by inserting digits into a(n-1).

Terms

    a(0) =3a(1) =36a(2) =361a(3) =32761a(4) =323761a(5) =32137561a(6) =3211375561a(7) =321113755561

External references