A061670 - cp's OEIS frontend

A061670 Distance to nearest prime power p^k, k=0 and k >= 2 (A025475).

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

[0, 1, 1, 0, 1, 2, 1, 0, 0, 1, 2, 3, 3, 2, 1, 0, 1, 2, 3, 4, 4, 3, 2, 1, 0, 1, 0, 1, 2, 2, 1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 8, 7, 6, 5, 4, 3, 2, 1, 0, 1, 2, 3, 4, 5, 6, 7, 7, 6, 5, 4, 3, 2, 1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 8, 7, 6, 5, 4, 3, 2, 1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16]

cp's OEIS Frontend

A061670 Distance to nearest prime power p^k, k=0 and k >= 2 (A025475).

Table of values

List of values

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

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

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