A347046 - cp's OEIS frontend

A347046 Greatest divisor of n with exactly half as many prime factors (counting multiplicity) as n, or 1 if there are none.

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

[1, 1, 1, 2, 1, 3, 1, 1, 3, 5, 1, 1, 1, 7, 5, 4, 1, 1, 1, 1, 7, 11, 1, 6, 5, 13, 1, 1, 1, 1, 1, 1, 11, 17, 7, 9, 1, 19, 13, 10, 1, 1, 1, 1, 1, 23, 1, 1, 7, 1, 17, 1, 1, 9, 11, 14, 19, 29, 1, 15, 1, 31, 1, 8, 13, 1, 1, 1, 23, 1, 1, 1, 1, 37, 1, 1, 11, 1, 1, 1, 9]

cp's OEIS Frontend

A347046 Greatest divisor of n with exactly half as many prime factors (counting multiplicity) as n, or 1 if there are none.

Table of values

List of values

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

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

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