a(1) = 81; for n > 1, a(n) is the smallest square > a(n-1) with a(n-1) forming its final digits.

A065791

a(1) = 81; for n > 1, a(n) is the smallest square > a(n-1) with a(n-1) forming its final digits.

Terms

    a(0) =81a(1) =1681a(2) =1461681a(3) =220861461681

External references