A226782 - cp's OEIS frontend

A226782 If n == 0 (mod 2) then a(n) = 0, otherwise a(n) = 4^(-1) in Z/nZ*.

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

[0, 0, 1, 0, 4, 0, 2, 0, 7, 0, 3, 0, 10, 0, 4, 0, 13, 0, 5, 0, 16, 0, 6, 0, 19, 0, 7, 0, 22, 0, 8, 0, 25, 0, 9, 0, 28, 0, 10, 0, 31, 0, 11, 0, 34, 0, 12, 0, 37, 0, 13, 0, 40, 0, 14, 0, 43, 0, 15, 0, 46, 0, 16, 0, 49, 0, 17]

cp's OEIS Frontend

A226782 If n == 0 (mod 2) then a(n) = 0, otherwise a(n) = 4^(-1) in Z/nZ*.

Table of values

List of values

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

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

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