a(1) = 0; for n > 1, a(n) is the smallest integer > 0 such that the concatenation a(n)a(n-1)...a(2)a(1) is a square.

A065691

a(1) = 0; for n > 1, a(n) is the smallest integer > 0 such that the concatenation a(n)a(n-1)...a(2)a(1) is a square.

Terms

    a(0) =0a(1) =10a(2) =8a(3) =16a(4) =146a(5) =22086a(6) =31071113326

External references