A265154 - cp's OEIS frontend

A265154 a(1) = 16, 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	16
2	81
3	225
4	625
5	681
6	2100
7	3889
8	17841
9	33121
10	452049
11	2561025
12	9392964
13	9776361
14	69946276
15	104857889
16	232947041
17	619807376
18	729085444
19	5435467076
20	8236728484
21	52686818481
22	370961353041
23	3290130736249
24	4333224368201
25	44310474545225
26	67348431045184
27	67835332918689

[16, 81, 225, 625, 681, 2100, 3889, 17841, 33121, 452049, 2561025, 9392964, 9776361, 69946276, 104857889, 232947041, 619807376, 729085444, 5435467076, 8236728484, 52686818481, 370961353041, 3290130736249, 4333224368201, 44310474545225, 67348431045184, 67835332918689]

cp's OEIS Frontend

A265154 a(1) = 16, 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