A257302 - cp's OEIS frontend

A257302 Number of 4th power nonresidues modulo n.

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

[0, 0, 1, 2, 3, 2, 3, 6, 5, 6, 5, 8, 9, 6, 11, 14, 12, 10, 9, 16, 13, 10, 11, 20, 19, 18, 17, 20, 21, 22, 15, 28, 21, 24, 27, 28, 27, 18, 31, 36, 30, 26, 21, 32, 37, 22, 23, 44, 27, 38, 41, 44, 39, 34, 43, 48, 37, 42, 29, 52, 45, 30, 47, 58, 57, 42, 33, 58]

cp's OEIS Frontend

A257302 Number of 4th power nonresidues modulo n.

Table of values

List of values

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

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

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