A361208 - cp's OEIS frontend

A361208 Number of middle divisors of the n-th number whose divisors increase by a factor of 2 or less.

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

[1, 1, 1, 2, 1, 2, 1, 1, 2, 2, 2, 2, 1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 3, 2, 2, 2, 2, 2, 1, 2, 2, 2, 4, 2, 1, 2, 2, 3, 2, 2, 2, 1, 2, 2, 4, 2, 1, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 4, 4, 1, 2, 2, 2, 2, 2, 2, 3, 2, 2, 2, 2, 2, 2, 2, 1, 2, 4, 2, 2, 2, 4, 2, 2, 4, 2, 2, 2, 1, 2, 3, 2, 2, 2, 4, 4, 2, 2, 3, 2, 2, 2, 2, 2, 2, 4]

cp's OEIS Frontend

A361208 Number of middle divisors of the n-th number whose divisors increase by a factor of 2 or less.

Table of values

List of values

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

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

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