A200927 - cp's OEIS frontend

A200927 Difference between (least semiprime >= n) and (largest semiprime <= n).

n	a(n)
4	0
5	2
6	0
7	3
8	3
9	0
10	0
11	4
12	4
13	4
14	0
15	0
16	6
17	6
18	6
19	6
20	6
21	0
22	0
23	3
24	3
25	0
26	0
27	7
28	7
29	7
30	7
31	7
32	7
33	0
34	0
35	0
36	3
37	3
38	0
39	0
40	7
41	7
42	7
43	7
44	7
45	7
46	0
47	3
48	3
49	0
50	2
51	0
52	4
53	4
54	4
55	0
56	2
57	0
58	0
59	4
60	4
61	4
62	0
63	3
64	3
65	0
66	4
67	4
68	4
69	0
70	5
71	5
72	5
73	5
74	0
75	3
76	3
77	0
78	5
79	5
80	5
81	5
82	0
83	3
84	3
85	0
86	0
87	0
88	4
89	4
90	4

[0, 2, 0, 3, 3, 0, 0, 4, 4, 4, 0, 0, 6, 6, 6, 6, 6, 0, 0, 3, 3, 0, 0, 7, 7, 7, 7, 7, 7, 0, 0, 0, 3, 3, 0, 0, 7, 7, 7, 7, 7, 7, 0, 3, 3, 0, 2, 0, 4, 4, 4, 0, 2, 0, 0, 4, 4, 4, 0, 3, 3, 0, 4, 4, 4, 0, 5, 5, 5, 5, 0, 3, 3, 0, 5, 5, 5, 5, 0, 3, 3, 0, 0, 0, 4, 4, 4]

cp's OEIS Frontend

A200927 Difference between (least semiprime >= n) and (largest semiprime <= n).

Table of values

List of values

n	a(n)
4	0
5	2
6	0
7	3
8	3
9	0
10	0
11	4
12	4
13	4
14	0
15	0
16	6
17	6
18	6
19	6
20	6
21	0
22	0
23	3
24	3
25	0
26	0
27	7
28	7
29	7
30	7
31	7
32	7
33	0
34	0
35	0
36	3
37	3
38	0
39	0
40	7
41	7
42	7
43	7
44	7
45	7
46	0
47	3
48	3
49	0
50	2
51	0
52	4
53	4
54	4
55	0
56	2
57	0
58	0
59	4
60	4
61	4
62	0
63	3
64	3
65	0
66	4
67	4
68	4
69	0
70	5
71	5
72	5
73	5
74	0
75	3
76	3
77	0
78	5
79	5
80	5
81	5
82	0
83	3
84	3
85	0
86	0
87	0
88	4
89	4
90	4

n	a(n)
4	0
5	2
6	0
7	3
8	3
9	0
10	0
11	4
12	4
13	4
14	0
15	0
16	6
17	6
18	6
19	6
20	6
21	0
22	0
23	3
24	3
25	0
26	0
27	7
28	7
29	7
30	7
31	7
32	7
33	0
34	0
35	0
36	3
37	3
38	0
39	0
40	7
41	7
42	7
43	7
44	7
45	7
46	0
47	3
48	3
49	0
50	2
51	0
52	4
53	4
54	4
55	0
56	2
57	0
58	0
59	4
60	4
61	4
62	0
63	3
64	3
65	0
66	4
67	4
68	4
69	0
70	5
71	5
72	5
73	5
74	0
75	3
76	3
77	0
78	5
79	5
80	5
81	5
82	0
83	3
84	3
85	0
86	0
87	0
88	4
89	4
90	4

n	a(n)
4	0
5	2
6	0
7	3
8	3
9	0
10	0
11	4
12	4
13	4
14	0
15	0
16	6
17	6
18	6
19	6
20	6
21	0
22	0
23	3
24	3
25	0
26	0
27	7
28	7
29	7
30	7
31	7
32	7
33	0
34	0
35	0
36	3
37	3
38	0
39	0
40	7
41	7
42	7
43	7
44	7
45	7
46	0
47	3
48	3
49	0
50	2
51	0
52	4
53	4
54	4
55	0
56	2
57	0
58	0
59	4
60	4
61	4
62	0
63	3
64	3
65	0
66	4
67	4
68	4
69	0
70	5
71	5
72	5
73	5
74	0
75	3
76	3
77	0
78	5
79	5
80	5
81	5
82	0
83	3
84	3
85	0
86	0
87	0
88	4
89	4
90	4