A065780 a(1) = 5; for n > 1, a(n) is the square root of the smallest square > a(n-1)^2 with a(n-1)^2 forming its final digits.

5, 15, 35, 285, 4035, 2660285, 40530004035, 478354453999997339715, 31246194523464509984000000000040530004035, 8209490213224904365731763888026434805200000000000000000000478354453999997339715

Offset: 1

Author

Klaus Brockhaus, Nov 19 2001

Keywords

• base
• nonn

Crossrefs

Cf. A050635, A065690, A061839, A065781.

Extensions

More terms from Ulrich Schimke (ulrschimke(AT)aol.com), Dec 18 2001