A360676 - cp's OEIS frontend

A360676 Sum of the left half (exclusive) of the prime indices of n.

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

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

cp's OEIS Frontend

A360676 Sum of the left half (exclusive) of the prime indices of n.

Table of values

List of values

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

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

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