A338900 - cp's OEIS frontend

A338900 Difference between the two prime indices of the n-th squarefree semiprime.

n	a(n)
1	1
2	2
3	3
4	1
5	2
6	4
7	5
8	3
9	6
10	1
11	7
12	4
13	8
14	5
15	2
16	6
17	9
18	10
19	3
20	7
21	11
22	1
23	12
24	4
25	13
26	8
27	2
28	9
29	14
30	5
31	15
32	10
33	6
34	16
35	3
36	17
37	11
38	12
39	4
40	18
41	13
42	19
43	1
44	7
45	20
46	8
47	21
48	14
49	5
50	22
51	15
52	23
53	16
54	9
55	2
56	24
57	17
58	25
59	6
60	10
61	26
62	3
63	18
64	27
65	11
66	7
67	28
68	19
69	1
70	29
71	12
72	20
73	2
74	21
75	4

[1, 2, 3, 1, 2, 4, 5, 3, 6, 1, 7, 4, 8, 5, 2, 6, 9, 10, 3, 7, 11, 1, 12, 4, 13, 8, 2, 9, 14, 5, 15, 10, 6, 16, 3, 17, 11, 12, 4, 18, 13, 19, 1, 7, 20, 8, 21, 14, 5, 22, 15, 23, 16, 9, 2, 24, 17, 25, 6, 10, 26, 3, 18, 27, 11, 7, 28, 19, 1, 29, 12, 20, 2, 21, 4]

cp's OEIS Frontend

A338900 Difference between the two prime indices of the n-th squarefree semiprime.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	1
5	2
6	4
7	5
8	3
9	6
10	1
11	7
12	4
13	8
14	5
15	2
16	6
17	9
18	10
19	3
20	7
21	11
22	1
23	12
24	4
25	13
26	8
27	2
28	9
29	14
30	5
31	15
32	10
33	6
34	16
35	3
36	17
37	11
38	12
39	4
40	18
41	13
42	19
43	1
44	7
45	20
46	8
47	21
48	14
49	5
50	22
51	15
52	23
53	16
54	9
55	2
56	24
57	17
58	25
59	6
60	10
61	26
62	3
63	18
64	27
65	11
66	7
67	28
68	19
69	1
70	29
71	12
72	20
73	2
74	21
75	4

n	a(n)
1	1
2	2
3	3
4	1
5	2
6	4
7	5
8	3
9	6
10	1
11	7
12	4
13	8
14	5
15	2
16	6
17	9
18	10
19	3
20	7
21	11
22	1
23	12
24	4
25	13
26	8
27	2
28	9
29	14
30	5
31	15
32	10
33	6
34	16
35	3
36	17
37	11
38	12
39	4
40	18
41	13
42	19
43	1
44	7
45	20
46	8
47	21
48	14
49	5
50	22
51	15
52	23
53	16
54	9
55	2
56	24
57	17
58	25
59	6
60	10
61	26
62	3
63	18
64	27
65	11
66	7
67	28
68	19
69	1
70	29
71	12
72	20
73	2
74	21
75	4

n	a(n)
1	1
2	2
3	3
4	1
5	2
6	4
7	5
8	3
9	6
10	1
11	7
12	4
13	8
14	5
15	2
16	6
17	9
18	10
19	3
20	7
21	11
22	1
23	12
24	4
25	13
26	8
27	2
28	9
29	14
30	5
31	15
32	10
33	6
34	16
35	3
36	17
37	11
38	12
39	4
40	18
41	13
42	19
43	1
44	7
45	20
46	8
47	21
48	14
49	5
50	22
51	15
52	23
53	16
54	9
55	2
56	24
57	17
58	25
59	6
60	10
61	26
62	3
63	18
64	27
65	11
66	7
67	28
68	19
69	1
70	29
71	12
72	20
73	2
74	21
75	4