A344908 - cp's OEIS frontend

A344908 Sum of the distinct odd-indexed prime divisors, p_{2k-1}, of n.

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

[0, 2, 0, 2, 5, 2, 0, 2, 0, 7, 11, 2, 0, 2, 5, 2, 17, 2, 0, 7, 0, 13, 23, 2, 5, 2, 0, 2, 0, 7, 31, 2, 11, 19, 5, 2, 0, 2, 0, 7, 41, 2, 0, 13, 5, 25, 47, 2, 0, 7, 17, 2, 0, 2, 16, 2, 0, 2, 59, 7, 0, 33, 0, 2, 5, 13, 67, 19, 23, 7, 0, 2, 73, 2, 5, 2, 11, 2, 0, 7, 0, 43, 83, 2, 22]

cp's OEIS Frontend

A344908 Sum of the distinct odd-indexed prime divisors, p_{2k-1}, of n.

Table of values

List of values

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

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

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