A217612 - cp's OEIS frontend

A217612 Difference between n-th prime and the smallest semiprime greater than it.

n	a(n)
1	2
2	1
3	1
4	2
5	3
6	1
7	4
8	2
9	2
10	4
11	2
12	1
13	5
14	3
15	2
16	2
17	3
18	1
19	2
20	3
21	1
22	3
23	2
24	2
25	9
26	5
27	3
28	4
29	2
30	2
31	2
32	2
33	4
34	2
35	6
36	4
37	1
38	3
39	2
40	4
41	4
42	2
43	3
44	1
45	4
46	2
47	2
48	3
49	8
50	6
51	2
52	8
53	6
54	2
55	2
56	2
57	5
58	3
59	1
60	6
61	4
62	2
63	2
64	3
65	1
66	2
67	3
68	2
69	8
70	6
71	2
72	2
73	4
74	4
75	2
76	3
77	2
78	1
79	2
80	2
81	3
82	1
83	6
84	4
85	6
86	2
87	2

[2, 1, 1, 2, 3, 1, 4, 2, 2, 4, 2, 1, 5, 3, 2, 2, 3, 1, 2, 3, 1, 3, 2, 2, 9, 5, 3, 4, 2, 2, 2, 2, 4, 2, 6, 4, 1, 3, 2, 4, 4, 2, 3, 1, 4, 2, 2, 3, 8, 6, 2, 8, 6, 2, 2, 2, 5, 3, 1, 6, 4, 2, 2, 3, 1, 2, 3, 2, 8, 6, 2, 2, 4, 4, 2, 3, 2, 1, 2, 2, 3, 1, 6, 4, 6, 2, 2]

cp's OEIS Frontend

A217612 Difference between n-th prime and the smallest semiprime greater than it.

Table of values

List of values

n	a(n)
1	2
2	1
3	1
4	2
5	3
6	1
7	4
8	2
9	2
10	4
11	2
12	1
13	5
14	3
15	2
16	2
17	3
18	1
19	2
20	3
21	1
22	3
23	2
24	2
25	9
26	5
27	3
28	4
29	2
30	2
31	2
32	2
33	4
34	2
35	6
36	4
37	1
38	3
39	2
40	4
41	4
42	2
43	3
44	1
45	4
46	2
47	2
48	3
49	8
50	6
51	2
52	8
53	6
54	2
55	2
56	2
57	5
58	3
59	1
60	6
61	4
62	2
63	2
64	3
65	1
66	2
67	3
68	2
69	8
70	6
71	2
72	2
73	4
74	4
75	2
76	3
77	2
78	1
79	2
80	2
81	3
82	1
83	6
84	4
85	6
86	2
87	2

n	a(n)
1	2
2	1
3	1
4	2
5	3
6	1
7	4
8	2
9	2
10	4
11	2
12	1
13	5
14	3
15	2
16	2
17	3
18	1
19	2
20	3
21	1
22	3
23	2
24	2
25	9
26	5
27	3
28	4
29	2
30	2
31	2
32	2
33	4
34	2
35	6
36	4
37	1
38	3
39	2
40	4
41	4
42	2
43	3
44	1
45	4
46	2
47	2
48	3
49	8
50	6
51	2
52	8
53	6
54	2
55	2
56	2
57	5
58	3
59	1
60	6
61	4
62	2
63	2
64	3
65	1
66	2
67	3
68	2
69	8
70	6
71	2
72	2
73	4
74	4
75	2
76	3
77	2
78	1
79	2
80	2
81	3
82	1
83	6
84	4
85	6
86	2
87	2

n	a(n)
1	2
2	1
3	1
4	2
5	3
6	1
7	4
8	2
9	2
10	4
11	2
12	1
13	5
14	3
15	2
16	2
17	3
18	1
19	2
20	3
21	1
22	3
23	2
24	2
25	9
26	5
27	3
28	4
29	2
30	2
31	2
32	2
33	4
34	2
35	6
36	4
37	1
38	3
39	2
40	4
41	4
42	2
43	3
44	1
45	4
46	2
47	2
48	3
49	8
50	6
51	2
52	8
53	6
54	2
55	2
56	2
57	5
58	3
59	1
60	6
61	4
62	2
63	2
64	3
65	1
66	2
67	3
68	2
69	8
70	6
71	2
72	2
73	4
74	4
75	2
76	3
77	2
78	1
79	2
80	2
81	3
82	1
83	6
84	4
85	6
86	2
87	2