A338901 - cp's OEIS frontend

A338901 Position of the first appearance of prime(n) as a factor in the list of squarefree semiprimes.

n	a(n)
1	1
2	1
3	2
4	3
5	6
6	7
7	9
8	11
9	13
10	17
11	18
12	21
13	23
14	25
15	29
16	31
17	34
18	36
19	40
20	42
21	45
22	47
23	50
24	52
25	56
26	58
27	61
28	64
29	67
30	70
31	76
32	78
33	81
34	82
35	86
36	89
37	93
38	97
39	100
40	104
41	106
42	107
43	112
44	113
45	116
46	118
47	125
48	129
49	133
50	134
51	135
52	139
53	141
54	147
55	150
56	154
57	159
58	160
59	165
60	167
61	169

[1, 1, 2, 3, 6, 7, 9, 11, 13, 17, 18, 21, 23, 25, 29, 31, 34, 36, 40, 42, 45, 47, 50, 52, 56, 58, 61, 64, 67, 70, 76, 78, 81, 82, 86, 89, 93, 97, 100, 104, 106, 107, 112, 113, 116, 118, 125, 129, 133, 134, 135, 139, 141, 147, 150, 154, 159, 160, 165, 167, 169]

cp's OEIS Frontend

A338901 Position of the first appearance of prime(n) as a factor in the list of squarefree semiprimes.

Table of values

List of values

n	a(n)
1	1
2	1
3	2
4	3
5	6
6	7
7	9
8	11
9	13
10	17
11	18
12	21
13	23
14	25
15	29
16	31
17	34
18	36
19	40
20	42
21	45
22	47
23	50
24	52
25	56
26	58
27	61
28	64
29	67
30	70
31	76
32	78
33	81
34	82
35	86
36	89
37	93
38	97
39	100
40	104
41	106
42	107
43	112
44	113
45	116
46	118
47	125
48	129
49	133
50	134
51	135
52	139
53	141
54	147
55	150
56	154
57	159
58	160
59	165
60	167
61	169

n	a(n)
1	1
2	1
3	2
4	3
5	6
6	7
7	9
8	11
9	13
10	17
11	18
12	21
13	23
14	25
15	29
16	31
17	34
18	36
19	40
20	42
21	45
22	47
23	50
24	52
25	56
26	58
27	61
28	64
29	67
30	70
31	76
32	78
33	81
34	82
35	86
36	89
37	93
38	97
39	100
40	104
41	106
42	107
43	112
44	113
45	116
46	118
47	125
48	129
49	133
50	134
51	135
52	139
53	141
54	147
55	150
56	154
57	159
58	160
59	165
60	167
61	169

n	a(n)
1	1
2	1
3	2
4	3
5	6
6	7
7	9
8	11
9	13
10	17
11	18
12	21
13	23
14	25
15	29
16	31
17	34
18	36
19	40
20	42
21	45
22	47
23	50
24	52
25	56
26	58
27	61
28	64
29	67
30	70
31	76
32	78
33	81
34	82
35	86
36	89
37	93
38	97
39	100
40	104
41	106
42	107
43	112
44	113
45	116
46	118
47	125
48	129
49	133
50	134
51	135
52	139
53	141
54	147
55	150
56	154
57	159
58	160
59	165
60	167
61	169