A381348 - cp's OEIS frontend

A381348 Irregular triangle read by rows in which row n lists the largest subset of Z/nZ fixed by x -> x^2.

n	a(n)
1	0
2	0
3	1
4	0
5	1
6	0
7	1
8	0
9	1
10	0
11	1
12	3
13	4
14	0
15	1
16	2
17	4
18	0
19	1
20	0
21	1
22	4
23	7
24	0
25	1
26	5
27	6
28	0
29	1
30	3
31	4
32	5
33	9
34	0
35	1
36	4
37	9
38	0
39	1
40	3
41	9
42	0
43	1
44	2
45	4
46	7
47	8
48	9
49	11
50	0
51	1
52	6
53	10
54	0
55	1
56	0
57	1
58	0
59	1
60	4
61	7
62	9
63	10
64	13
65	16
66	0
67	1
68	4
69	5
70	6
71	7
72	9
73	11
74	16
75	17
76	0
77	1
78	5
79	16
80	0
81	1
82	4
83	7
84	9
85	15
86	16
87	18

[0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 3, 4, 0, 1, 2, 4, 0, 1, 0, 1, 4, 7, 0, 1, 5, 6, 0, 1, 3, 4, 5, 9, 0, 1, 4, 9, 0, 1, 3, 9, 0, 1, 2, 4, 7, 8, 9, 11, 0, 1, 6, 10, 0, 1, 0, 1, 0, 1, 4, 7, 9, 10, 13, 16, 0, 1, 4, 5, 6, 7, 9, 11, 16, 17, 0, 1, 5, 16, 0, 1, 4, 7, 9, 15, 16, 18]

cp's OEIS Frontend

A381348 Irregular triangle read by rows in which row n lists the largest subset of Z/nZ fixed by x -> x^2.

Table of values

List of values

n	a(n)
1	0
2	0
3	1
4	0
5	1
6	0
7	1
8	0
9	1
10	0
11	1
12	3
13	4
14	0
15	1
16	2
17	4
18	0
19	1
20	0
21	1
22	4
23	7
24	0
25	1
26	5
27	6
28	0
29	1
30	3
31	4
32	5
33	9
34	0
35	1
36	4
37	9
38	0
39	1
40	3
41	9
42	0
43	1
44	2
45	4
46	7
47	8
48	9
49	11
50	0
51	1
52	6
53	10
54	0
55	1
56	0
57	1
58	0
59	1
60	4
61	7
62	9
63	10
64	13
65	16
66	0
67	1
68	4
69	5
70	6
71	7
72	9
73	11
74	16
75	17
76	0
77	1
78	5
79	16
80	0
81	1
82	4
83	7
84	9
85	15
86	16
87	18

n	a(n)
1	0
2	0
3	1
4	0
5	1
6	0
7	1
8	0
9	1
10	0
11	1
12	3
13	4
14	0
15	1
16	2
17	4
18	0
19	1
20	0
21	1
22	4
23	7
24	0
25	1
26	5
27	6
28	0
29	1
30	3
31	4
32	5
33	9
34	0
35	1
36	4
37	9
38	0
39	1
40	3
41	9
42	0
43	1
44	2
45	4
46	7
47	8
48	9
49	11
50	0
51	1
52	6
53	10
54	0
55	1
56	0
57	1
58	0
59	1
60	4
61	7
62	9
63	10
64	13
65	16
66	0
67	1
68	4
69	5
70	6
71	7
72	9
73	11
74	16
75	17
76	0
77	1
78	5
79	16
80	0
81	1
82	4
83	7
84	9
85	15
86	16
87	18

n	a(n)
1	0
2	0
3	1
4	0
5	1
6	0
7	1
8	0
9	1
10	0
11	1
12	3
13	4
14	0
15	1
16	2
17	4
18	0
19	1
20	0
21	1
22	4
23	7
24	0
25	1
26	5
27	6
28	0
29	1
30	3
31	4
32	5
33	9
34	0
35	1
36	4
37	9
38	0
39	1
40	3
41	9
42	0
43	1
44	2
45	4
46	7
47	8
48	9
49	11
50	0
51	1
52	6
53	10
54	0
55	1
56	0
57	1
58	0
59	1
60	4
61	7
62	9
63	10
64	13
65	16
66	0
67	1
68	4
69	5
70	6
71	7
72	9
73	11
74	16
75	17
76	0
77	1
78	5
79	16
80	0
81	1
82	4
83	7
84	9
85	15
86	16
87	18