A240923 - cp's OEIS frontend

A240923 a(n) = numerator(sigma(n)/n) - sigma(denominator(sigma(n)/n)).

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

[0, 0, 0, 0, 0, 1, 0, 0, 0, 3, 0, 3, 0, 4, 2, 0, 0, 1, 0, 3, 0, 6, 0, 2, 0, 7, 0, 1, 0, 6, 0, 0, 4, 9, 0, 0, 0, 10, 0, 2, 0, 8, 0, 9, 2, 12, 0, 3, 0, 0, 6, 7, 0, 7, 0, 7, 0, 15, 0, 8, 0, 16, 0, 0, 0, 12, 0, 9, 8, 24, 0, 5, 0, 19, 0, 15, 0, 14, 0, 3, 0, 21, 0]

cp's OEIS Frontend

A240923 a(n) = numerator(sigma(n)/n) - sigma(denominator(sigma(n)/n)).

Table of values

List of values

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

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

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