A327979 - cp's OEIS frontend

A327979 a(n) = gcd(n, A002322(n)), where A002322 is Carmichael lambda, also known as psi.

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

[1, 1, 1, 2, 1, 2, 1, 2, 3, 2, 1, 2, 1, 2, 1, 4, 1, 6, 1, 4, 3, 2, 1, 2, 5, 2, 9, 2, 1, 2, 1, 8, 1, 2, 1, 6, 1, 2, 3, 4, 1, 6, 1, 2, 3, 2, 1, 4, 7, 10, 1, 4, 1, 18, 5, 2, 3, 2, 1, 4, 1, 2, 3, 16, 1, 2, 1, 4, 1, 2, 1, 6, 1, 2, 5, 2, 1, 6, 1, 4, 27, 2, 1, 6, 1, 2, 1, 2, 1, 6, 1, 2, 3, 2, 1, 8, 1, 14, 3, 20, 1, 2, 1, 4, 3]

cp's OEIS Frontend

A327979 a(n) = gcd(n, A002322(n)), where A002322 is Carmichael lambda, also known as psi.

Table of values

List of values

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

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

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