A056100 - cp's OEIS frontend

A056100 a(n) = sigma(n)*phi(n) + 1 (mod n).

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

[0, 0, 0, 3, 0, 1, 0, 5, 7, 3, 0, 5, 0, 5, 13, 9, 0, 1, 0, 17, 7, 9, 0, 1, 21, 11, 19, 1, 0, 7, 0, 17, 4, 15, 33, 13, 0, 17, 19, 1, 0, 19, 0, 9, 28, 21, 0, 17, 43, 11, 10, 13, 0, 1, 21, 25, 31, 27, 0, 49, 0, 29, 28, 33, 3, 43, 0, 21, 16, 27, 0, 1, 0, 35, 11, 25, 63, 55, 0, 33, 55, 39, 0, 1]

cp's OEIS Frontend

A056100 a(n) = sigma(n)*phi(n) + 1 (mod n).

Table of values

List of values

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

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

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