A378457 - cp's OEIS frontend

A378457 Difference between n and the greatest prime power <= n, allowing 1.

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

[0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 2, 0, 0, 1, 0, 1, 2, 3, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 2, 3, 4, 0, 1, 2, 3, 0, 1, 0, 1, 2, 3, 0, 1, 0, 1, 2, 3, 0, 1, 2, 3, 4, 5, 0, 1, 0, 1, 2, 0, 1, 2, 0, 1, 2, 3, 0, 1, 0, 1, 2, 3, 4, 5, 0, 1, 0, 1, 0, 1, 2, 3, 4]

cp's OEIS Frontend

A378457 Difference between n and the greatest prime power <= n, allowing 1.

Table of values

List of values

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

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

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