A378544 - cp's OEIS frontend

A378544 a(n) is the sum of those divisors d of n for which A083345(d) is even, where A083345(n) is the numerator of Sum(e/p: n=Product(p^e)).

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	10
10	1
11	1
12	13
13	1
14	1
15	16
16	17
17	1
18	10
19	1
20	21
21	22
22	1
23	1
24	13
25	26
26	1
27	10
28	29
29	1
30	16
31	1
32	17
33	34
34	1
35	36
36	22
37	1
38	1
39	40
40	21
41	1
42	22
43	1
44	45
45	25
46	1
47	1
48	29
49	50
50	26
51	52
52	53
53	1
54	10
55	56
56	29
57	58
58	1
59	1
60	48
61	1
62	1
63	31
64	17
65	66
66	34
67	1
68	69
69	70
70	36
71	1
72	22
73	1
74	1
75	41
76	77
77	78
78	40
79	1
80	37
81	91
82	1
83	1
84	62
85	86
86	1
87	88
88	45
89	1
90	25

[1, 1, 1, 1, 1, 1, 1, 1, 10, 1, 1, 13, 1, 1, 16, 17, 1, 10, 1, 21, 22, 1, 1, 13, 26, 1, 10, 29, 1, 16, 1, 17, 34, 1, 36, 22, 1, 1, 40, 21, 1, 22, 1, 45, 25, 1, 1, 29, 50, 26, 52, 53, 1, 10, 56, 29, 58, 1, 1, 48, 1, 1, 31, 17, 66, 34, 1, 69, 70, 36, 1, 22, 1, 1, 41, 77, 78, 40, 1, 37, 91, 1, 1, 62, 86, 1, 88, 45, 1, 25]

cp's OEIS Frontend

A378544 a(n) is the sum of those divisors d of n for which A083345(d) is even, where A083345(n) is the numerator of Sum(e/p: n=Product(p^e)).

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	10
10	1
11	1
12	13
13	1
14	1
15	16
16	17
17	1
18	10
19	1
20	21
21	22
22	1
23	1
24	13
25	26
26	1
27	10
28	29
29	1
30	16
31	1
32	17
33	34
34	1
35	36
36	22
37	1
38	1
39	40
40	21
41	1
42	22
43	1
44	45
45	25
46	1
47	1
48	29
49	50
50	26
51	52
52	53
53	1
54	10
55	56
56	29
57	58
58	1
59	1
60	48
61	1
62	1
63	31
64	17
65	66
66	34
67	1
68	69
69	70
70	36
71	1
72	22
73	1
74	1
75	41
76	77
77	78
78	40
79	1
80	37
81	91
82	1
83	1
84	62
85	86
86	1
87	88
88	45
89	1
90	25

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	10
10	1
11	1
12	13
13	1
14	1
15	16
16	17
17	1
18	10
19	1
20	21
21	22
22	1
23	1
24	13
25	26
26	1
27	10
28	29
29	1
30	16
31	1
32	17
33	34
34	1
35	36
36	22
37	1
38	1
39	40
40	21
41	1
42	22
43	1
44	45
45	25
46	1
47	1
48	29
49	50
50	26
51	52
52	53
53	1
54	10
55	56
56	29
57	58
58	1
59	1
60	48
61	1
62	1
63	31
64	17
65	66
66	34
67	1
68	69
69	70
70	36
71	1
72	22
73	1
74	1
75	41
76	77
77	78
78	40
79	1
80	37
81	91
82	1
83	1
84	62
85	86
86	1
87	88
88	45
89	1
90	25

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	10
10	1
11	1
12	13
13	1
14	1
15	16
16	17
17	1
18	10
19	1
20	21
21	22
22	1
23	1
24	13
25	26
26	1
27	10
28	29
29	1
30	16
31	1
32	17
33	34
34	1
35	36
36	22
37	1
38	1
39	40
40	21
41	1
42	22
43	1
44	45
45	25
46	1
47	1
48	29
49	50
50	26
51	52
52	53
53	1
54	10
55	56
56	29
57	58
58	1
59	1
60	48
61	1
62	1
63	31
64	17
65	66
66	34
67	1
68	69
69	70
70	36
71	1
72	22
73	1
74	1
75	41
76	77
77	78
78	40
79	1
80	37
81	91
82	1
83	1
84	62
85	86
86	1
87	88
88	45
89	1
90	25