A215202 - cp's OEIS frontend

A215202 Irregular triangle in which n-th row gives m in 1, ..., n-1 such that m^2 == m (mod n).

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

[1, 1, 1, 1, 1, 3, 4, 1, 1, 1, 1, 5, 6, 1, 1, 4, 9, 1, 1, 7, 8, 1, 6, 10, 1, 1, 1, 9, 10, 1, 1, 5, 16, 1, 7, 15, 1, 11, 12, 1, 1, 9, 16, 1, 1, 13, 14, 1, 1, 8, 21, 1, 1, 6, 10, 15, 16, 21, 25, 1, 1, 1, 12, 22, 1, 17, 18, 1, 15, 21, 1, 9, 28, 1, 1, 19, 20, 1, 13]

cp's OEIS Frontend

A215202 Irregular triangle in which n-th row gives m in 1, ..., n-1 such that m^2 == m (mod n).

Table of values

List of values

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

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

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