A319246 - cp's OEIS frontend

A319246 Sum of prime indices of the n-th squarefree number.

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

[0, 1, 2, 3, 3, 4, 4, 5, 6, 5, 5, 7, 8, 6, 6, 9, 7, 10, 6, 11, 7, 8, 7, 12, 9, 8, 13, 7, 14, 10, 15, 9, 16, 8, 10, 11, 17, 18, 12, 9, 8, 19, 11, 8, 20, 21, 13, 9, 9, 22, 14, 23, 10, 15, 12, 24, 10, 13, 16, 11, 25, 26, 10, 27, 9, 17, 28, 29, 9, 14, 30, 11, 12]

cp's OEIS Frontend

A319246 Sum of prime indices of the n-th squarefree number.

Table of values

List of values

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

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

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