a(1) = 36; 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.

A065784

a(1) = 36; 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) =36a(1) =19a(2) =603a(3) =155636a(4) =4615730086

External references