A370647 - cp's OEIS frontend

A370647 Numbers such that only one set can be obtained by choosing a different prime factor of each prime index.

n	a(n)
1	1
2	3
3	5
4	7
5	11
6	15
7	17
8	19
9	23
10	31
11	33
12	35
13	39
14	41
15	51
16	53
17	55
18	59
19	65
20	67
21	69
22	77
23	83
24	85
25	87
26	91
27	93
28	95
29	97
30	103
31	109
32	111
33	119
34	123
35	127
36	129
37	131
38	155
39	157
40	161
41	165
42	169
43	177
44	179
45	183
46	185
47	187
48	191
49	201
50	203
51	205
52	209
53	211
54	213
55	217
56	227
57	235
58	237
59	241

[1, 3, 5, 7, 11, 15, 17, 19, 23, 31, 33, 35, 39, 41, 51, 53, 55, 59, 65, 67, 69, 77, 83, 85, 87, 91, 93, 95, 97, 103, 109, 111, 119, 123, 127, 129, 131, 155, 157, 161, 165, 169, 177, 179, 183, 185, 187, 191, 201, 203, 205, 209, 211, 213, 217, 227, 235, 237, 241]

cp's OEIS Frontend

A370647 Numbers such that only one set can be obtained by choosing a different prime factor of each prime index.

Table of values

List of values

n	a(n)
1	1
2	3
3	5
4	7
5	11
6	15
7	17
8	19
9	23
10	31
11	33
12	35
13	39
14	41
15	51
16	53
17	55
18	59
19	65
20	67
21	69
22	77
23	83
24	85
25	87
26	91
27	93
28	95
29	97
30	103
31	109
32	111
33	119
34	123
35	127
36	129
37	131
38	155
39	157
40	161
41	165
42	169
43	177
44	179
45	183
46	185
47	187
48	191
49	201
50	203
51	205
52	209
53	211
54	213
55	217
56	227
57	235
58	237
59	241

n	a(n)
1	1
2	3
3	5
4	7
5	11
6	15
7	17
8	19
9	23
10	31
11	33
12	35
13	39
14	41
15	51
16	53
17	55
18	59
19	65
20	67
21	69
22	77
23	83
24	85
25	87
26	91
27	93
28	95
29	97
30	103
31	109
32	111
33	119
34	123
35	127
36	129
37	131
38	155
39	157
40	161
41	165
42	169
43	177
44	179
45	183
46	185
47	187
48	191
49	201
50	203
51	205
52	209
53	211
54	213
55	217
56	227
57	235
58	237
59	241

n	a(n)
1	1
2	3
3	5
4	7
5	11
6	15
7	17
8	19
9	23
10	31
11	33
12	35
13	39
14	41
15	51
16	53
17	55
18	59
19	65
20	67
21	69
22	77
23	83
24	85
25	87
26	91
27	93
28	95
29	97
30	103
31	109
32	111
33	119
34	123
35	127
36	129
37	131
38	155
39	157
40	161
41	165
42	169
43	177
44	179
45	183
46	185
47	187
48	191
49	201
50	203
51	205
52	209
53	211
54	213
55	217
56	227
57	235
58	237
59	241