A071773 - cp's OEIS frontend

A071773 a(n) = gcd(rad(n), n/rad(n)), where rad(n) = A007947(n) is the squarefree kernel of n.

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

[1, 1, 1, 2, 1, 1, 1, 2, 3, 1, 1, 2, 1, 1, 1, 2, 1, 3, 1, 2, 1, 1, 1, 2, 5, 1, 3, 2, 1, 1, 1, 2, 1, 1, 1, 6, 1, 1, 1, 2, 1, 1, 1, 2, 3, 1, 1, 2, 7, 5, 1, 2, 1, 3, 1, 2, 1, 1, 1, 2, 1, 1, 3, 2, 1, 1, 1, 2, 1, 1, 1, 6, 1, 1, 5, 2, 1, 1, 1, 2, 3, 1, 1, 2, 1, 1, 1, 2, 1, 3, 1, 2, 1, 1, 1, 2, 1, 7, 3, 10, 1, 1, 1, 2]

cp's OEIS Frontend

A071773 a(n) = gcd(rad(n), n/rad(n)), where rad(n) = A007947(n) is the squarefree kernel of n.

Table of values

List of values

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

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

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