a(1) = 1; a(n) for n > 1 is the smallest multiple of a(n-1) that is a square and begins with n.

A078215

a(1) = 1; a(n) for n > 1 is the smallest multiple of a(n-1) that is a square and begins with n.

Terms

    a(0) =1a(1) =25a(2) =3025a(3) =48400a(4) =5856400a(5) =6377619600a(6) =771691971600

External references