A138009 - cp's OEIS frontend

A138009 a(n) = number of positive integers k, k <= n, where d(k) >= d(n); d(n) = number of positive divisors of n.

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

[1, 1, 2, 1, 4, 1, 6, 2, 4, 3, 10, 1, 12, 5, 6, 2, 16, 2, 18, 3, 10, 11, 22, 1, 15, 13, 14, 5, 28, 2, 30, 7, 18, 19, 20, 1, 36, 22, 23, 4, 40, 5, 42, 11, 12, 28, 46, 1, 33, 14, 31, 15, 52, 7, 34, 8, 36, 37, 58, 1, 60, 39, 19, 10, 42, 10, 66, 22, 45, 11, 70, 2, 72, 48, 25, 26, 51, 13, 78, 4]

cp's OEIS Frontend

A138009 a(n) = number of positive integers k, k <= n, where d(k) >= d(n); d(n) = number of positive divisors of n.

Table of values

List of values

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

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

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