A232324 - cp's OEIS frontend

A232324 n(n+1)/2 modulo sigma(n).

n	a(n)
1	0
2	0
3	2
4	3
5	3
6	9
7	4
8	6
9	6
10	1
11	6
12	22
13	7
14	9
15	0
16	12
17	9
18	15
19	10
20	0
21	7
22	1
23	12
24	0
25	15
26	15
27	18
28	14
29	15
30	33
31	16
32	24
33	33
34	1
35	6
36	29
37	19
38	21
39	52
40	10
41	21
42	39
43	22
44	66
45	21
46	1
47	24
48	60
49	28
50	66
51	30
52	6
53	27
54	45
55	28
56	36
57	53
58	1
59	30
60	150
61	31
62	33
63	40
64	48
65	45
66	51
67	34
68	78
69	15
70	37
71	36

[0, 0, 2, 3, 3, 9, 4, 6, 6, 1, 6, 22, 7, 9, 0, 12, 9, 15, 10, 0, 7, 1, 12, 0, 15, 15, 18, 14, 15, 33, 16, 24, 33, 1, 6, 29, 19, 21, 52, 10, 21, 39, 22, 66, 21, 1, 24, 60, 28, 66, 30, 6, 27, 45, 28, 36, 53, 1, 30, 150, 31, 33, 40, 48, 45, 51, 34, 78, 15, 37, 36]

cp's OEIS Frontend

A232324 n(n+1)/2 modulo sigma(n).

Table of values

List of values

n	a(n)
1	0
2	0
3	2
4	3
5	3
6	9
7	4
8	6
9	6
10	1
11	6
12	22
13	7
14	9
15	0
16	12
17	9
18	15
19	10
20	0
21	7
22	1
23	12
24	0
25	15
26	15
27	18
28	14
29	15
30	33
31	16
32	24
33	33
34	1
35	6
36	29
37	19
38	21
39	52
40	10
41	21
42	39
43	22
44	66
45	21
46	1
47	24
48	60
49	28
50	66
51	30
52	6
53	27
54	45
55	28
56	36
57	53
58	1
59	30
60	150
61	31
62	33
63	40
64	48
65	45
66	51
67	34
68	78
69	15
70	37
71	36

n	a(n)
1	0
2	0
3	2
4	3
5	3
6	9
7	4
8	6
9	6
10	1
11	6
12	22
13	7
14	9
15	0
16	12
17	9
18	15
19	10
20	0
21	7
22	1
23	12
24	0
25	15
26	15
27	18
28	14
29	15
30	33
31	16
32	24
33	33
34	1
35	6
36	29
37	19
38	21
39	52
40	10
41	21
42	39
43	22
44	66
45	21
46	1
47	24
48	60
49	28
50	66
51	30
52	6
53	27
54	45
55	28
56	36
57	53
58	1
59	30
60	150
61	31
62	33
63	40
64	48
65	45
66	51
67	34
68	78
69	15
70	37
71	36

n	a(n)
1	0
2	0
3	2
4	3
5	3
6	9
7	4
8	6
9	6
10	1
11	6
12	22
13	7
14	9
15	0
16	12
17	9
18	15
19	10
20	0
21	7
22	1
23	12
24	0
25	15
26	15
27	18
28	14
29	15
30	33
31	16
32	24
33	33
34	1
35	6
36	29
37	19
38	21
39	52
40	10
41	21
42	39
43	22
44	66
45	21
46	1
47	24
48	60
49	28
50	66
51	30
52	6
53	27
54	45
55	28
56	36
57	53
58	1
59	30
60	150
61	31
62	33
63	40
64	48
65	45
66	51
67	34
68	78
69	15
70	37
71	36