A336498 - cp's OEIS frontend

A336498 Irregular triangle read by rows where T(n,k) is the number of divisors of n! with k prime factors, counted with multiplicity.

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	2
6	1
7	1
8	2
9	2
10	2
11	1
12	1
13	3
14	4
15	4
16	3
17	1
18	1
19	3
20	5
21	6
22	6
23	5
24	3
25	1
26	1
27	4
28	8
29	11
30	12
31	11
32	8
33	4
34	1
35	1
36	4
37	8
38	11
39	12
40	12
41	12
42	12
43	11
44	8
45	4
46	1
47	1
48	4
49	8
50	12
51	16
52	19
53	20
54	20
55	19
56	16
57	12
58	8
59	4
60	1
61	1
62	4
63	9
64	15
65	21
66	26
67	29
68	30
69	30
70	29
71	26
72	21
73	15
74	9
75	4
76	1

[1, 1, 1, 1, 1, 2, 1, 1, 2, 2, 2, 1, 1, 3, 4, 4, 3, 1, 1, 3, 5, 6, 6, 5, 3, 1, 1, 4, 8, 11, 12, 11, 8, 4, 1, 1, 4, 8, 11, 12, 12, 12, 12, 11, 8, 4, 1, 1, 4, 8, 12, 16, 19, 20, 20, 19, 16, 12, 8, 4, 1, 1, 4, 9, 15, 21, 26, 29, 30, 30, 29, 26, 21, 15, 9, 4, 1]

cp's OEIS Frontend

A336498 Irregular triangle read by rows where T(n,k) is the number of divisors of n! with k prime factors, counted with multiplicity.

Table of values

List of values

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	2
6	1
7	1
8	2
9	2
10	2
11	1
12	1
13	3
14	4
15	4
16	3
17	1
18	1
19	3
20	5
21	6
22	6
23	5
24	3
25	1
26	1
27	4
28	8
29	11
30	12
31	11
32	8
33	4
34	1
35	1
36	4
37	8
38	11
39	12
40	12
41	12
42	12
43	11
44	8
45	4
46	1
47	1
48	4
49	8
50	12
51	16
52	19
53	20
54	20
55	19
56	16
57	12
58	8
59	4
60	1
61	1
62	4
63	9
64	15
65	21
66	26
67	29
68	30
69	30
70	29
71	26
72	21
73	15
74	9
75	4
76	1

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	2
6	1
7	1
8	2
9	2
10	2
11	1
12	1
13	3
14	4
15	4
16	3
17	1
18	1
19	3
20	5
21	6
22	6
23	5
24	3
25	1
26	1
27	4
28	8
29	11
30	12
31	11
32	8
33	4
34	1
35	1
36	4
37	8
38	11
39	12
40	12
41	12
42	12
43	11
44	8
45	4
46	1
47	1
48	4
49	8
50	12
51	16
52	19
53	20
54	20
55	19
56	16
57	12
58	8
59	4
60	1
61	1
62	4
63	9
64	15
65	21
66	26
67	29
68	30
69	30
70	29
71	26
72	21
73	15
74	9
75	4
76	1

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	2
6	1
7	1
8	2
9	2
10	2
11	1
12	1
13	3
14	4
15	4
16	3
17	1
18	1
19	3
20	5
21	6
22	6
23	5
24	3
25	1
26	1
27	4
28	8
29	11
30	12
31	11
32	8
33	4
34	1
35	1
36	4
37	8
38	11
39	12
40	12
41	12
42	12
43	11
44	8
45	4
46	1
47	1
48	4
49	8
50	12
51	16
52	19
53	20
54	20
55	19
56	16
57	12
58	8
59	4
60	1
61	1
62	4
63	9
64	15
65	21
66	26
67	29
68	30
69	30
70	29
71	26
72	21
73	15
74	9
75	4
76	1