A187730 - cp's OEIS frontend

A187730 Greatest common divisor of Carmichael lambda(n) and n - 1.

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

[1, 1, 2, 1, 4, 1, 6, 1, 2, 1, 10, 1, 12, 1, 2, 1, 16, 1, 18, 1, 2, 1, 22, 1, 4, 1, 2, 3, 28, 1, 30, 1, 2, 1, 2, 1, 36, 1, 2, 1, 40, 1, 42, 1, 4, 1, 46, 1, 6, 1, 2, 3, 52, 1, 2, 1, 2, 1, 58, 1, 60, 1, 2, 1, 4, 5, 66, 1, 2, 3, 70, 1, 72, 1, 2, 3, 2, 1, 78, 1]

cp's OEIS Frontend

A187730 Greatest common divisor of Carmichael lambda(n) and n - 1.

Table of values

List of values

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

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

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