A363981 - cp's OEIS frontend

A363981 Integers k such that the smallest integer with k factor pairs has an odd number of divisors.

n	a(n)
1	1
2	2
3	5
4	11
5	13
6	14
7	17
8	23
9	29
10	38
11	41
12	43
13	46
14	47
15	53
16	58
17	59
18	61
19	67
20	68
21	71
22	73
23	74
24	83
25	86
26	89
27	94
28	95
29	101
30	103
31	107
32	109
33	111
34	113
35	116
36	118
37	122
38	123
39	127
40	131
41	137
42	138
43	143
44	149
45	151
46	158
47	163
48	167
49	172
50	173
51	178
52	179
53	181
54	188
55	191
56	193
57	194
58	197

[1, 2, 5, 11, 13, 14, 17, 23, 29, 38, 41, 43, 46, 47, 53, 58, 59, 61, 67, 68, 71, 73, 74, 83, 86, 89, 94, 95, 101, 103, 107, 109, 111, 113, 116, 118, 122, 123, 127, 131, 137, 138, 143, 149, 151, 158, 163, 167, 172, 173, 178, 179, 181, 188, 191, 193, 194, 197]

cp's OEIS Frontend

A363981 Integers k such that the smallest integer with k factor pairs has an odd number of divisors.

Table of values

List of values

n	a(n)
1	1
2	2
3	5
4	11
5	13
6	14
7	17
8	23
9	29
10	38
11	41
12	43
13	46
14	47
15	53
16	58
17	59
18	61
19	67
20	68
21	71
22	73
23	74
24	83
25	86
26	89
27	94
28	95
29	101
30	103
31	107
32	109
33	111
34	113
35	116
36	118
37	122
38	123
39	127
40	131
41	137
42	138
43	143
44	149
45	151
46	158
47	163
48	167
49	172
50	173
51	178
52	179
53	181
54	188
55	191
56	193
57	194
58	197

n	a(n)
1	1
2	2
3	5
4	11
5	13
6	14
7	17
8	23
9	29
10	38
11	41
12	43
13	46
14	47
15	53
16	58
17	59
18	61
19	67
20	68
21	71
22	73
23	74
24	83
25	86
26	89
27	94
28	95
29	101
30	103
31	107
32	109
33	111
34	113
35	116
36	118
37	122
38	123
39	127
40	131
41	137
42	138
43	143
44	149
45	151
46	158
47	163
48	167
49	172
50	173
51	178
52	179
53	181
54	188
55	191
56	193
57	194
58	197

n	a(n)
1	1
2	2
3	5
4	11
5	13
6	14
7	17
8	23
9	29
10	38
11	41
12	43
13	46
14	47
15	53
16	58
17	59
18	61
19	67
20	68
21	71
22	73
23	74
24	83
25	86
26	89
27	94
28	95
29	101
30	103
31	107
32	109
33	111
34	113
35	116
36	118
37	122
38	123
39	127
40	131
41	137
42	138
43	143
44	149
45	151
46	158
47	163
48	167
49	172
50	173
51	178
52	179
53	181
54	188
55	191
56	193
57	194
58	197