A250211 - cp's OEIS frontend

A250211 Square array read by antidiagonals: A(m,n) = multiplicative order of m mod n, or 0 if m and n are not coprime.

n	a(n)
1	1
2	1
3	1
4	1
5	0
6	1
7	1
8	1
9	2
10	1
11	1
12	0
13	0
14	0
15	1
16	1
17	1
18	1
19	2
20	4
21	1
22	1
23	0
24	2
25	0
26	4
27	0
28	1
29	1
30	1
31	0
32	1
33	2
34	0
35	3
36	1
37	1
38	0
39	1
40	0
41	0
42	0
43	6
44	0
45	1
46	1
47	1
48	2
49	2
50	1
51	2
52	3
53	2
54	6
55	1
56	1
57	0
58	0
59	0
60	4
61	0
62	6
63	0
64	0
65	0
66	1
67	1
68	1
69	1
70	1
71	4
72	1
73	2
74	2
75	3
76	4
77	10
78	1
79	1
80	0
81	2
82	0
83	2
84	0
85	0
86	0
87	6
88	0
89	5
90	0
91	1
92	1
93	1
94	0
95	2
96	0
97	0
98	1
99	2
100	0
101	0
102	5
103	0
104	12
105	1

[1, 1, 1, 1, 0, 1, 1, 1, 2, 1, 1, 0, 0, 0, 1, 1, 1, 1, 2, 4, 1, 1, 0, 2, 0, 4, 0, 1, 1, 1, 0, 1, 2, 0, 3, 1, 1, 0, 1, 0, 0, 0, 6, 0, 1, 1, 1, 2, 2, 1, 2, 3, 2, 6, 1, 1, 0, 0, 0, 4, 0, 6, 0, 0, 0, 1, 1, 1, 1, 1, 4, 1, 2, 2, 3, 4, 10, 1, 1, 0, 2, 0, 2, 0, 0, 0, 6, 0, 5, 0, 1, 1, 1, 0, 2, 0, 0, 1, 2, 0, 0, 5, 0, 12, 1]

cp's OEIS Frontend

A250211 Square array read by antidiagonals: A(m,n) = multiplicative order of m mod n, or 0 if m and n are not coprime.

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	1
5	0
6	1
7	1
8	1
9	2
10	1
11	1
12	0
13	0
14	0
15	1
16	1
17	1
18	1
19	2
20	4
21	1
22	1
23	0
24	2
25	0
26	4
27	0
28	1
29	1
30	1
31	0
32	1
33	2
34	0
35	3
36	1
37	1
38	0
39	1
40	0
41	0
42	0
43	6
44	0
45	1
46	1
47	1
48	2
49	2
50	1
51	2
52	3
53	2
54	6
55	1
56	1
57	0
58	0
59	0
60	4
61	0
62	6
63	0
64	0
65	0
66	1
67	1
68	1
69	1
70	1
71	4
72	1
73	2
74	2
75	3
76	4
77	10
78	1
79	1
80	0
81	2
82	0
83	2
84	0
85	0
86	0
87	6
88	0
89	5
90	0
91	1
92	1
93	1
94	0
95	2
96	0
97	0
98	1
99	2
100	0
101	0
102	5
103	0
104	12
105	1

n	a(n)
1	1
2	1
3	1
4	1
5	0
6	1
7	1
8	1
9	2
10	1
11	1
12	0
13	0
14	0
15	1
16	1
17	1
18	1
19	2
20	4
21	1
22	1
23	0
24	2
25	0
26	4
27	0
28	1
29	1
30	1
31	0
32	1
33	2
34	0
35	3
36	1
37	1
38	0
39	1
40	0
41	0
42	0
43	6
44	0
45	1
46	1
47	1
48	2
49	2
50	1
51	2
52	3
53	2
54	6
55	1
56	1
57	0
58	0
59	0
60	4
61	0
62	6
63	0
64	0
65	0
66	1
67	1
68	1
69	1
70	1
71	4
72	1
73	2
74	2
75	3
76	4
77	10
78	1
79	1
80	0
81	2
82	0
83	2
84	0
85	0
86	0
87	6
88	0
89	5
90	0
91	1
92	1
93	1
94	0
95	2
96	0
97	0
98	1
99	2
100	0
101	0
102	5
103	0
104	12
105	1

n	a(n)
1	1
2	1
3	1
4	1
5	0
6	1
7	1
8	1
9	2
10	1
11	1
12	0
13	0
14	0
15	1
16	1
17	1
18	1
19	2
20	4
21	1
22	1
23	0
24	2
25	0
26	4
27	0
28	1
29	1
30	1
31	0
32	1
33	2
34	0
35	3
36	1
37	1
38	0
39	1
40	0
41	0
42	0
43	6
44	0
45	1
46	1
47	1
48	2
49	2
50	1
51	2
52	3
53	2
54	6
55	1
56	1
57	0
58	0
59	0
60	4
61	0
62	6
63	0
64	0
65	0
66	1
67	1
68	1
69	1
70	1
71	4
72	1
73	2
74	2
75	3
76	4
77	10
78	1
79	1
80	0
81	2
82	0
83	2
84	0
85	0
86	0
87	6
88	0
89	5
90	0
91	1
92	1
93	1
94	0
95	2
96	0
97	0
98	1
99	2
100	0
101	0
102	5
103	0
104	12
105	1