A243987 - cp's OEIS frontend

A243987 Triangle read by rows: T(n, k) is the number of divisors of n that are less than or equal to k for 1 <= k <= n.

n	a(n)
1	1
2	1
3	2
4	1
5	1
6	2
7	1
8	2
9	2
10	3
11	1
12	1
13	1
14	1
15	2
16	1
17	2
18	3
19	3
20	3
21	4
22	1
23	1
24	1
25	1
26	1
27	1
28	2
29	1
30	2
31	2
32	3
33	3
34	3
35	3
36	4
37	1
38	1
39	2
40	2
41	2
42	2
43	2
44	2
45	3
46	1
47	2
48	2
49	2
50	3
51	3
52	3
53	3
54	3
55	4
56	1
57	1
58	1
59	1
60	1
61	1
62	1
63	1
64	1
65	1
66	2
67	1
68	2
69	3
70	4
71	4
72	5
73	5
74	5
75	5
76	5
77	5
78	6
79	1
80	1
81	1
82	1
83	1
84	1
85	1
86	1
87	1
88	1
89	1
90	1
91	2
92	1
93	2
94	2
95	2
96	2
97	2
98	3
99	3
100	3
101	3
102	3
103	3
104	3
105	4
106	1
107	1
108	2
109	2
110	3
111	3
112	3
113	3
114	3
115	3
116	3
117	3
118	3
119	3
120	4

[1, 1, 2, 1, 1, 2, 1, 2, 2, 3, 1, 1, 1, 1, 2, 1, 2, 3, 3, 3, 4, 1, 1, 1, 1, 1, 1, 2, 1, 2, 2, 3, 3, 3, 3, 4, 1, 1, 2, 2, 2, 2, 2, 2, 3, 1, 2, 2, 2, 3, 3, 3, 3, 3, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 3, 4, 4, 5, 5, 5, 5, 5, 5, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 4, 1, 1, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4]

cp's OEIS Frontend

A243987 Triangle read by rows: T(n, k) is the number of divisors of n that are less than or equal to k for 1 <= k <= n.

Table of values

List of values

n	a(n)
1	1
2	1
3	2
4	1
5	1
6	2
7	1
8	2
9	2
10	3
11	1
12	1
13	1
14	1
15	2
16	1
17	2
18	3
19	3
20	3
21	4
22	1
23	1
24	1
25	1
26	1
27	1
28	2
29	1
30	2
31	2
32	3
33	3
34	3
35	3
36	4
37	1
38	1
39	2
40	2
41	2
42	2
43	2
44	2
45	3
46	1
47	2
48	2
49	2
50	3
51	3
52	3
53	3
54	3
55	4
56	1
57	1
58	1
59	1
60	1
61	1
62	1
63	1
64	1
65	1
66	2
67	1
68	2
69	3
70	4
71	4
72	5
73	5
74	5
75	5
76	5
77	5
78	6
79	1
80	1
81	1
82	1
83	1
84	1
85	1
86	1
87	1
88	1
89	1
90	1
91	2
92	1
93	2
94	2
95	2
96	2
97	2
98	3
99	3
100	3
101	3
102	3
103	3
104	3
105	4
106	1
107	1
108	2
109	2
110	3
111	3
112	3
113	3
114	3
115	3
116	3
117	3
118	3
119	3
120	4

n	a(n)
1	1
2	1
3	2
4	1
5	1
6	2
7	1
8	2
9	2
10	3
11	1
12	1
13	1
14	1
15	2
16	1
17	2
18	3
19	3
20	3
21	4
22	1
23	1
24	1
25	1
26	1
27	1
28	2
29	1
30	2
31	2
32	3
33	3
34	3
35	3
36	4
37	1
38	1
39	2
40	2
41	2
42	2
43	2
44	2
45	3
46	1
47	2
48	2
49	2
50	3
51	3
52	3
53	3
54	3
55	4
56	1
57	1
58	1
59	1
60	1
61	1
62	1
63	1
64	1
65	1
66	2
67	1
68	2
69	3
70	4
71	4
72	5
73	5
74	5
75	5
76	5
77	5
78	6
79	1
80	1
81	1
82	1
83	1
84	1
85	1
86	1
87	1
88	1
89	1
90	1
91	2
92	1
93	2
94	2
95	2
96	2
97	2
98	3
99	3
100	3
101	3
102	3
103	3
104	3
105	4
106	1
107	1
108	2
109	2
110	3
111	3
112	3
113	3
114	3
115	3
116	3
117	3
118	3
119	3
120	4

n	a(n)
1	1
2	1
3	2
4	1
5	1
6	2
7	1
8	2
9	2
10	3
11	1
12	1
13	1
14	1
15	2
16	1
17	2
18	3
19	3
20	3
21	4
22	1
23	1
24	1
25	1
26	1
27	1
28	2
29	1
30	2
31	2
32	3
33	3
34	3
35	3
36	4
37	1
38	1
39	2
40	2
41	2
42	2
43	2
44	2
45	3
46	1
47	2
48	2
49	2
50	3
51	3
52	3
53	3
54	3
55	4
56	1
57	1
58	1
59	1
60	1
61	1
62	1
63	1
64	1
65	1
66	2
67	1
68	2
69	3
70	4
71	4
72	5
73	5
74	5
75	5
76	5
77	5
78	6
79	1
80	1
81	1
82	1
83	1
84	1
85	1
86	1
87	1
88	1
89	1
90	1
91	2
92	1
93	2
94	2
95	2
96	2
97	2
98	3
99	3
100	3
101	3
102	3
103	3
104	3
105	4
106	1
107	1
108	2
109	2
110	3
111	3
112	3
113	3
114	3
115	3
116	3
117	3
118	3
119	3
120	4