A097106 - cp's OEIS frontend

A097106 a(n) = (Smallest prime power >= n) - (greatest prime power <= n).

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	2
7	0
8	0
9	0
10	2
11	0
12	2
13	0
14	3
15	3
16	0
17	0
18	2
19	0
20	4
21	4
22	4
23	0
24	2
25	0
26	2
27	0
28	2
29	0
30	2
31	0
32	0
33	5
34	5
35	5
36	5
37	0
38	4
39	4
40	4
41	0
42	2
43	0
44	4
45	4
46	4
47	0
48	2
49	0
50	4
51	4
52	4
53	0
54	6
55	6
56	6
57	6
58	6
59	0
60	2
61	0
62	3
63	3
64	0
65	3
66	3
67	0
68	4
69	4
70	4
71	0
72	2
73	0
74	6
75	6
76	6
77	6
78	6
79	0
80	2
81	0
82	2
83	0
84	6
85	6
86	6
87	6
88	6
89	0
90	8
91	8
92	8
93	8
94	8
95	8
96	8
97	0
98	4
99	4
100	4
101	0
102	2
103	0
104	4
105	4

[0, 0, 0, 0, 0, 2, 0, 0, 0, 2, 0, 2, 0, 3, 3, 0, 0, 2, 0, 4, 4, 4, 0, 2, 0, 2, 0, 2, 0, 2, 0, 0, 5, 5, 5, 5, 0, 4, 4, 4, 0, 2, 0, 4, 4, 4, 0, 2, 0, 4, 4, 4, 0, 6, 6, 6, 6, 6, 0, 2, 0, 3, 3, 0, 3, 3, 0, 4, 4, 4, 0, 2, 0, 6, 6, 6, 6, 6, 0, 2, 0, 2, 0, 6, 6, 6, 6, 6, 0, 8, 8, 8, 8, 8, 8, 8, 0, 4, 4, 4, 0, 2, 0, 4, 4]

cp's OEIS Frontend

A097106 a(n) = (Smallest prime power >= n) - (greatest prime power <= n).

Table of values

List of values

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	2
7	0
8	0
9	0
10	2
11	0
12	2
13	0
14	3
15	3
16	0
17	0
18	2
19	0
20	4
21	4
22	4
23	0
24	2
25	0
26	2
27	0
28	2
29	0
30	2
31	0
32	0
33	5
34	5
35	5
36	5
37	0
38	4
39	4
40	4
41	0
42	2
43	0
44	4
45	4
46	4
47	0
48	2
49	0
50	4
51	4
52	4
53	0
54	6
55	6
56	6
57	6
58	6
59	0
60	2
61	0
62	3
63	3
64	0
65	3
66	3
67	0
68	4
69	4
70	4
71	0
72	2
73	0
74	6
75	6
76	6
77	6
78	6
79	0
80	2
81	0
82	2
83	0
84	6
85	6
86	6
87	6
88	6
89	0
90	8
91	8
92	8
93	8
94	8
95	8
96	8
97	0
98	4
99	4
100	4
101	0
102	2
103	0
104	4
105	4

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	2
7	0
8	0
9	0
10	2
11	0
12	2
13	0
14	3
15	3
16	0
17	0
18	2
19	0
20	4
21	4
22	4
23	0
24	2
25	0
26	2
27	0
28	2
29	0
30	2
31	0
32	0
33	5
34	5
35	5
36	5
37	0
38	4
39	4
40	4
41	0
42	2
43	0
44	4
45	4
46	4
47	0
48	2
49	0
50	4
51	4
52	4
53	0
54	6
55	6
56	6
57	6
58	6
59	0
60	2
61	0
62	3
63	3
64	0
65	3
66	3
67	0
68	4
69	4
70	4
71	0
72	2
73	0
74	6
75	6
76	6
77	6
78	6
79	0
80	2
81	0
82	2
83	0
84	6
85	6
86	6
87	6
88	6
89	0
90	8
91	8
92	8
93	8
94	8
95	8
96	8
97	0
98	4
99	4
100	4
101	0
102	2
103	0
104	4
105	4

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	2
7	0
8	0
9	0
10	2
11	0
12	2
13	0
14	3
15	3
16	0
17	0
18	2
19	0
20	4
21	4
22	4
23	0
24	2
25	0
26	2
27	0
28	2
29	0
30	2
31	0
32	0
33	5
34	5
35	5
36	5
37	0
38	4
39	4
40	4
41	0
42	2
43	0
44	4
45	4
46	4
47	0
48	2
49	0
50	4
51	4
52	4
53	0
54	6
55	6
56	6
57	6
58	6
59	0
60	2
61	0
62	3
63	3
64	0
65	3
66	3
67	0
68	4
69	4
70	4
71	0
72	2
73	0
74	6
75	6
76	6
77	6
78	6
79	0
80	2
81	0
82	2
83	0
84	6
85	6
86	6
87	6
88	6
89	0
90	8
91	8
92	8
93	8
94	8
95	8
96	8
97	0
98	4
99	4
100	4
101	0
102	2
103	0
104	4
105	4