A339841 - cp's OEIS frontend

A339841 Numbers that can be factored into distinct primes or semiprimes in exactly one way.

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	7
7	8
8	9
9	11
10	13
11	17
12	19
13	23
14	25
15	27
16	29
17	31
18	37
19	41
20	43
21	47
22	48
23	49
24	53
25	59
26	61
27	67
28	71
29	73
30	79
31	80
32	83
33	89
34	97
35	101
36	103
37	107
38	109
39	112
40	113
41	121
42	125
43	127
44	131
45	137
46	139
47	144
48	149
49	151
50	157
51	162
52	163
53	167
54	169
55	173
56	176
57	179
58	181
59	191
60	193

[1, 2, 3, 4, 5, 7, 8, 9, 11, 13, 17, 19, 23, 25, 27, 29, 31, 37, 41, 43, 47, 48, 49, 53, 59, 61, 67, 71, 73, 79, 80, 83, 89, 97, 101, 103, 107, 109, 112, 113, 121, 125, 127, 131, 137, 139, 144, 149, 151, 157, 162, 163, 167, 169, 173, 176, 179, 181, 191, 193]

cp's OEIS Frontend

A339841 Numbers that can be factored into distinct primes or semiprimes in exactly one way.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	7
7	8
8	9
9	11
10	13
11	17
12	19
13	23
14	25
15	27
16	29
17	31
18	37
19	41
20	43
21	47
22	48
23	49
24	53
25	59
26	61
27	67
28	71
29	73
30	79
31	80
32	83
33	89
34	97
35	101
36	103
37	107
38	109
39	112
40	113
41	121
42	125
43	127
44	131
45	137
46	139
47	144
48	149
49	151
50	157
51	162
52	163
53	167
54	169
55	173
56	176
57	179
58	181
59	191
60	193

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	7
7	8
8	9
9	11
10	13
11	17
12	19
13	23
14	25
15	27
16	29
17	31
18	37
19	41
20	43
21	47
22	48
23	49
24	53
25	59
26	61
27	67
28	71
29	73
30	79
31	80
32	83
33	89
34	97
35	101
36	103
37	107
38	109
39	112
40	113
41	121
42	125
43	127
44	131
45	137
46	139
47	144
48	149
49	151
50	157
51	162
52	163
53	167
54	169
55	173
56	176
57	179
58	181
59	191
60	193

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	7
7	8
8	9
9	11
10	13
11	17
12	19
13	23
14	25
15	27
16	29
17	31
18	37
19	41
20	43
21	47
22	48
23	49
24	53
25	59
26	61
27	67
28	71
29	73
30	79
31	80
32	83
33	89
34	97
35	101
36	103
37	107
38	109
39	112
40	113
41	121
42	125
43	127
44	131
45	137
46	139
47	144
48	149
49	151
50	157
51	162
52	163
53	167
54	169
55	173
56	176
57	179
58	181
59	191
60	193