A112983 - cp's OEIS frontend

A112983 a(n) = 2^(n+1) mod n.

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

[0, 0, 1, 0, 4, 2, 4, 0, 7, 8, 4, 8, 4, 8, 1, 0, 4, 2, 4, 12, 16, 8, 4, 8, 14, 8, 25, 4, 4, 8, 4, 0, 16, 8, 1, 20, 4, 8, 16, 32, 4, 2, 4, 32, 34, 8, 4, 32, 11, 48, 16, 32, 4, 2, 31, 8, 16, 8, 4, 32, 4, 8, 16, 0, 64, 62, 4, 32, 16, 18, 4, 56, 4, 8, 61, 32, 36, 50, 4]

cp's OEIS Frontend

A112983 a(n) = 2^(n+1) mod n.

Table of values

List of values

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

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

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