A344931 - cp's OEIS frontend

A344931 Sum of the distinct even-indexed prime divisors, p_{2k}, of n.

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

[0, 0, 3, 0, 0, 3, 7, 0, 3, 0, 0, 3, 13, 7, 3, 0, 0, 3, 19, 0, 10, 0, 0, 3, 0, 13, 3, 7, 29, 3, 0, 0, 3, 0, 7, 3, 37, 19, 16, 0, 0, 10, 43, 0, 3, 0, 0, 3, 7, 0, 3, 13, 53, 3, 0, 7, 22, 29, 0, 3, 61, 0, 10, 0, 13, 3, 0, 0, 3, 7, 71, 3, 0, 37, 3, 19, 7, 16, 79, 0, 3, 0, 0, 10, 0, 43, 32]

cp's OEIS Frontend

A344931 Sum of the distinct even-indexed prime divisors, p_{2k}, of n.

Table of values

List of values

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

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

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