A065780 - cp's OEIS frontend

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.

n	a(n)
1	5
2	15
3	35
4	285
5	4035
6	2660285
7	40530004035
8	478354453999997339715
9	31246194523464509984000000000040530004035
10	8209490213224904365731763888026434805200000000000000000000478354453999997339715

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

cp's OEIS Frontend

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.

Table of values

List of values