A265148 - cp's OEIS frontend

A265148 a(1) = 4, a(n) = smallest number > a(n-1) such that the concatenation of a(n-1) and a(n) is a square.

n	a(n)
1	4
2	9
3	61
4	504
5	4516
6	47504
7	382025
8	3975209
9	33057329
10	80214016
11	454665681
12	4507966404
13	44168848384
14	69005350809
15	163894140625
16	784386132324
17	5954843762641
18	7954794246144
19	53996843222416
20	69176076458289
21	379510987739761
22	1641640879622564
23	7593632535763529
24	31733339799107600

[4, 9, 61, 504, 4516, 47504, 382025, 3975209, 33057329, 80214016, 454665681, 4507966404, 44168848384, 69005350809, 163894140625, 784386132324, 5954843762641, 7954794246144, 53996843222416, 69176076458289, 379510987739761, 1641640879622564, 7593632535763529, 31733339799107600]

cp's OEIS Frontend

A265148 a(1) = 4, a(n) = smallest number > a(n-1) such that the concatenation of a(n-1) and a(n) is a square.

Table of values

List of values