A045767 - cp's OEIS frontend

A045767 Number of prime factors of triple factorials n!!! (A007661), with multiplicity.

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

[0, 1, 1, 2, 2, 3, 3, 5, 5, 5, 6, 8, 6, 8, 10, 10, 9, 13, 11, 12, 15, 13, 13, 19, 15, 15, 22, 18, 16, 25, 19, 21, 27, 21, 23, 31, 22, 25, 33, 26, 26, 36, 27, 29, 39, 29, 30, 44, 31, 33, 46, 34, 34, 50, 36, 38, 52, 38, 39, 56, 39, 41, 59, 45, 43, 62, 46, 46, 64, 49, 47, 69, 50, 49]

cp's OEIS Frontend

A045767 Number of prime factors of triple factorials n!!! (A007661), with multiplicity.

Table of values

List of values

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

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

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