A318447 - cp's OEIS frontend

A318447 a(n) = Sum_{d|n, d A294898(d), where A294898(d) = A005187(d) - sigma(d).

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	2
11	0
12	-2
13	0
14	3
15	2
16	0
17	0
18	1
19	0
20	2
21	3
22	7
23	0
24	-8
25	2
26	9
27	3
28	4
29	0
30	2
31	0
32	0
33	7
34	14
35	5
36	-10
37	0
38	15
39	9
40	-2
41	0
42	9
43	0
44	12
45	7
46	18
47	0
48	-22
49	3
50	18
51	14
52	16
53	0
54	6
55	9
56	1
57	15
58	24
59	0
60	-24
61	0
62	25
63	13
64	0
65	11
66	26
67	0
68	26
69	18
70	25
71	0
72	-45
73	0
74	33
75	20
76	28
77	10
78	32
79	0
80	-14
81	13
82	37
83	0
84	-15
85	16
86	38
87	24
88	13
89	0
90	-8
91	12
92	34
93	25
94	41
95	17
96	-52
97	0

[0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, -2, 0, 3, 2, 0, 0, 1, 0, 2, 3, 7, 0, -8, 2, 9, 3, 4, 0, 2, 0, 0, 7, 14, 5, -10, 0, 15, 9, -2, 0, 9, 0, 12, 7, 18, 0, -22, 3, 18, 14, 16, 0, 6, 9, 1, 15, 24, 0, -24, 0, 25, 13, 0, 11, 26, 0, 26, 18, 25, 0, -45, 0, 33, 20, 28, 10, 32, 0, -14, 13, 37, 0, -15, 16, 38, 24, 13, 0, -8, 12, 34, 25, 41, 17, -52, 0]

cp's OEIS Frontend

A318447 a(n) = Sum_{d|n, d A294898(d), where A294898(d) = A005187(d) - sigma(d).

Table of values

List of values

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	2
11	0
12	-2
13	0
14	3
15	2
16	0
17	0
18	1
19	0
20	2
21	3
22	7
23	0
24	-8
25	2
26	9
27	3
28	4
29	0
30	2
31	0
32	0
33	7
34	14
35	5
36	-10
37	0
38	15
39	9
40	-2
41	0
42	9
43	0
44	12
45	7
46	18
47	0
48	-22
49	3
50	18
51	14
52	16
53	0
54	6
55	9
56	1
57	15
58	24
59	0
60	-24
61	0
62	25
63	13
64	0
65	11
66	26
67	0
68	26
69	18
70	25
71	0
72	-45
73	0
74	33
75	20
76	28
77	10
78	32
79	0
80	-14
81	13
82	37
83	0
84	-15
85	16
86	38
87	24
88	13
89	0
90	-8
91	12
92	34
93	25
94	41
95	17
96	-52
97	0

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	2
11	0
12	-2
13	0
14	3
15	2
16	0
17	0
18	1
19	0
20	2
21	3
22	7
23	0
24	-8
25	2
26	9
27	3
28	4
29	0
30	2
31	0
32	0
33	7
34	14
35	5
36	-10
37	0
38	15
39	9
40	-2
41	0
42	9
43	0
44	12
45	7
46	18
47	0
48	-22
49	3
50	18
51	14
52	16
53	0
54	6
55	9
56	1
57	15
58	24
59	0
60	-24
61	0
62	25
63	13
64	0
65	11
66	26
67	0
68	26
69	18
70	25
71	0
72	-45
73	0
74	33
75	20
76	28
77	10
78	32
79	0
80	-14
81	13
82	37
83	0
84	-15
85	16
86	38
87	24
88	13
89	0
90	-8
91	12
92	34
93	25
94	41
95	17
96	-52
97	0

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	2
11	0
12	-2
13	0
14	3
15	2
16	0
17	0
18	1
19	0
20	2
21	3
22	7
23	0
24	-8
25	2
26	9
27	3
28	4
29	0
30	2
31	0
32	0
33	7
34	14
35	5
36	-10
37	0
38	15
39	9
40	-2
41	0
42	9
43	0
44	12
45	7
46	18
47	0
48	-22
49	3
50	18
51	14
52	16
53	0
54	6
55	9
56	1
57	15
58	24
59	0
60	-24
61	0
62	25
63	13
64	0
65	11
66	26
67	0
68	26
69	18
70	25
71	0
72	-45
73	0
74	33
75	20
76	28
77	10
78	32
79	0
80	-14
81	13
82	37
83	0
84	-15
85	16
86	38
87	24
88	13
89	0
90	-8
91	12
92	34
93	25
94	41
95	17
96	-52
97	0