A132588 - cp's OEIS frontend

A132588 Let b(k) be the k-th term of the flattened irregular array where the m-th row contains the positive divisors of m (b(k) = A027750(k)). Then a(n) = gcd(b(n), n).

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

[1, 1, 1, 1, 1, 1, 1, 4, 1, 5, 1, 2, 1, 2, 1, 1, 1, 2, 1, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 15, 1, 1, 4, 1, 2, 1, 1, 1, 2, 1, 2, 3, 2, 1, 1, 1, 2, 1, 1, 5, 2, 1, 1, 1, 7, 1, 2, 1, 2, 1, 1, 1, 2, 1, 4, 3, 2, 1, 12, 1, 1]

cp's OEIS Frontend

A132588 Let b(k) be the k-th term of the flattened irregular array where the m-th row contains the positive divisors of m (b(k) = A027750(k)). Then a(n) = gcd(b(n), n).

Table of values

List of values

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

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

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