A279421 - cp's OEIS frontend

A279421 Numbers k such that k^2 has an odd number of digits and the middle digit is 1.

n	a(n)
1	1
2	110
3	119
4	123
5	127
6	131
7	142
8	152
9	182
10	190
11	210
12	224
13	237
14	239
15	261
16	263
17	276
18	290
19	310
20	1035
21	1040
22	1059
23	1073
24	1087
25	1096
26	1105
27	1123
28	1132
29	1141
30	1145
31	1154
32	1167
33	1171
34	1184
35	1188
36	1209
37	1213
38	1217
39	1285
40	1289
41	1293
42	1312
43	1316
44	1331
45	1346
46	1357
47	1368

[1, 110, 119, 123, 127, 131, 142, 152, 182, 190, 210, 224, 237, 239, 261, 263, 276, 290, 310, 1035, 1040, 1059, 1073, 1087, 1096, 1105, 1123, 1132, 1141, 1145, 1154, 1167, 1171, 1184, 1188, 1209, 1213, 1217, 1285, 1289, 1293, 1312, 1316, 1331, 1346, 1357, 1368]

cp's OEIS Frontend

A279421 Numbers k such that k^2 has an odd number of digits and the middle digit is 1.

Table of values

List of values