A330669 - cp's OEIS frontend

A330669 The prime indices of the prime powers (A000961).

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

[0, 1, 2, 1, 3, 4, 1, 2, 5, 6, 1, 7, 8, 9, 3, 2, 10, 11, 1, 12, 13, 14, 15, 4, 16, 17, 18, 1, 19, 20, 21, 22, 2, 23, 24, 25, 26, 27, 28, 29, 30, 5, 3, 31, 1, 32, 33, 34, 35, 36, 37, 38, 39, 6, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49]

cp's OEIS Frontend

A330669 The prime indices of the prime powers (A000961).

Table of values

List of values

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

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

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