A201560 - cp's OEIS frontend

A201560 a(n) = (Sum(m^(n-1), m=1..n-1) + 1) modulo n.

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

[0, 0, 0, 1, 0, 4, 0, 1, 7, 6, 0, 1, 0, 8, 11, 1, 0, 10, 0, 1, 15, 12, 0, 1, 21, 14, 19, 1, 0, 16, 0, 1, 23, 18, 1, 1, 0, 20, 27, 1, 0, 22, 0, 1, 22, 24, 0, 1, 43, 26, 35, 1, 0, 28, 1, 1, 39, 30, 0, 1, 0, 32, 43, 1, 53, 34, 0, 1, 47, 36, 0, 1, 0, 38, 51, 1, 1]

cp's OEIS Frontend

A201560 a(n) = (Sum(m^(n-1), m=1..n-1) + 1) modulo n.

Table of values

List of values

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

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

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