A273357 - cp's OEIS frontend

A273357 Numbers n such that the decimal number concat(2,n) is a square.

n	a(n)
1	5
2	25
3	56
4	89
5	116
6	209
7	304
8	401
9	500
10	601
11	704
12	809
13	916
14	1025
15	1316
16	1609
17	1904
18	2201
19	2500
20	2801
21	3104
22	3409
23	3716
24	4025
25	4336
26	4649
27	4964
28	5281
29	5600
30	5921
31	6244
32	6569
33	6896
34	7225
35	7556
36	7889
37	8224
38	8561
39	8900
40	9241
41	9584
42	9929
43	10681

[5, 25, 56, 89, 116, 209, 304, 401, 500, 601, 704, 809, 916, 1025, 1316, 1609, 1904, 2201, 2500, 2801, 3104, 3409, 3716, 4025, 4336, 4649, 4964, 5281, 5600, 5921, 6244, 6569, 6896, 7225, 7556, 7889, 8224, 8561, 8900, 9241, 9584, 9929, 10681]

cp's OEIS Frontend

A273357 Numbers n such that the decimal number concat(2,n) is a square.

Table of values

List of values