A235796 - cp's OEIS frontend

A235796 2*n - 1 - sigma(n).

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

[0, 0, 1, 0, 3, -1, 5, 0, 4, 1, 9, -5, 11, 3, 5, 0, 15, -4, 17, -3, 9, 7, 21, -13, 18, 9, 13, -1, 27, -13, 29, 0, 17, 13, 21, -20, 35, 15, 21, -11, 39, -13, 41, 3, 11, 19, 45, -29, 40, 6, 29, 5, 51, -13, 37, -9, 33, 25, 57, -49, 59, 27, 21, 0, 45, -13, 65, 9, 41]

cp's OEIS Frontend

A235796 2*n - 1 - sigma(n).

Table of values

List of values

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

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

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