a(n) is the largest n-digit square whose sum of digits is also a square.

A180737

a(n) is the largest n-digit square whose sum of digits is also a square.

Terms

    a(0) =9a(1) =81a(2) =961a(3) =9025a(4) =96721a(5) =990025a(6) =9966649a(7) =99980001a(8) =999761161a(9) =9999400009a(10) =99998250625a(11) =999946000729

External references