A257211 - cp's OEIS frontend

A257211 Numbers n such that the decimal expansions of both n and n^2 have 1 as smallest digit and 8 as largest digit.

n	a(n)
1	128
2	178
3	871
4	1128
5	1178
6	1218
7	1258
8	1278
9	1284
10	1328
11	1358
12	1368
13	1478
14	1678
15	1681
16	1768
17	1778
18	1784
19	1785
20	1828
21	1874
22	1881
23	2681
24	2861
25	2871
26	3418
27	3581
28	3718
29	3816
30	3841
31	4178
32	4318
33	4815
34	4831
35	4841
36	4881
37	5178
38	5181
39	5182
40	5318
41	5815
42	5841
43	5871
44	5881

[128, 178, 871, 1128, 1178, 1218, 1258, 1278, 1284, 1328, 1358, 1368, 1478, 1678, 1681, 1768, 1778, 1784, 1785, 1828, 1874, 1881, 2681, 2861, 2871, 3418, 3581, 3718, 3816, 3841, 4178, 4318, 4815, 4831, 4841, 4881, 5178, 5181, 5182, 5318, 5815, 5841, 5871, 5881]

cp's OEIS Frontend

A257211 Numbers n such that the decimal expansions of both n and n^2 have 1 as smallest digit and 8 as largest digit.

Table of values

List of values