A080786 - cp's OEIS frontend

A080786 Triangle T(n,k) = number of k-smooth numbers <= n, read by rows.

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

[1, 1, 2, 1, 2, 3, 1, 3, 4, 4, 1, 3, 4, 4, 5, 1, 3, 5, 5, 6, 6, 1, 3, 5, 5, 6, 6, 7, 1, 4, 6, 6, 7, 7, 8, 8, 1, 4, 7, 7, 8, 8, 9, 9, 9, 1, 4, 7, 7, 9, 9, 10, 10, 10, 10, 1, 4, 7, 7, 9, 9, 10, 10, 10, 10, 11, 1, 4, 8, 8, 10, 10, 11, 11, 11, 11, 12, 12, 1, 4, 8, 8, 10, 10, 11, 11, 11, 11, 12, 12, 13, 1, 4]

cp's OEIS Frontend

A080786 Triangle T(n,k) = number of k-smooth numbers <= n, read by rows.

Table of values

List of values

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

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

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