A086712 - cp's OEIS frontend

A086712 Number of times the n-th prime power can be written as an arithmetic mean of two other prime powers.

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

[0, 1, 2, 2, 3, 3, 3, 4, 3, 4, 6, 6, 5, 5, 7, 8, 5, 6, 6, 7, 6, 8, 6, 8, 8, 7, 8, 10, 10, 9, 8, 9, 14, 8, 10, 11, 10, 12, 8, 11, 8, 12, 13, 12, 11, 11, 13, 13, 13, 13, 13, 11, 11, 14, 11, 13, 16, 12, 16, 14, 15, 16, 17, 13, 16, 15, 12, 18, 27, 15, 19, 18, 17, 15, 16, 15, 13, 18, 17, 15]

cp's OEIS Frontend

A086712 Number of times the n-th prime power can be written as an arithmetic mean of two other prime powers.

Table of values

List of values

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

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

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