A086289 - cp's OEIS frontend

A086289 Total number of prime factors of 7-smooth numbers.

n	a(n)
1	0
2	1
3	1
4	2
5	1
6	2
7	1
8	3
9	2
10	2
11	3
12	2
13	2
14	4
15	3
16	3
17	2
18	4
19	2
20	3
21	3
22	3
23	5
24	2
25	4
26	4
27	3
28	3
29	5
30	2
31	3
32	4
33	4
34	4
35	3
36	6
37	3
38	5
39	3
40	5
41	4
42	4
43	4
44	6
45	3
46	4
47	3
48	5
49	5
50	5
51	3
52	4
53	7
54	4
55	4
56	6
57	3
58	4
59	6
60	5
61	5
62	3
63	5
64	4
65	7
66	4
67	5
68	4
69	6
70	6
71	4
72	6
73	5
74	3
75	4
76	5
77	8
78	5
79	5
80	7
81	4
82	5
83	4
84	7
85	6
86	6
87	3
88	4
89	6
90	4
91	5
92	8
93	5
94	6
95	5
96	5
97	7
98	4
99	7
100	5

[0, 1, 1, 2, 1, 2, 1, 3, 2, 2, 3, 2, 2, 4, 3, 3, 2, 4, 2, 3, 3, 3, 5, 2, 4, 4, 3, 3, 5, 2, 3, 4, 4, 4, 3, 6, 3, 5, 3, 5, 4, 4, 4, 6, 3, 4, 3, 5, 5, 5, 3, 4, 7, 4, 4, 6, 3, 4, 6, 5, 5, 3, 5, 4, 7, 4, 5, 4, 6, 6, 4, 6, 5, 3, 4, 5, 8, 5, 5, 7, 4, 5, 4, 7, 6, 6, 3, 4, 6, 4, 5, 8, 5, 6, 5, 5, 7, 4, 7, 5]

cp's OEIS Frontend

A086289 Total number of prime factors of 7-smooth numbers.

Table of values

List of values

n	a(n)
1	0
2	1
3	1
4	2
5	1
6	2
7	1
8	3
9	2
10	2
11	3
12	2
13	2
14	4
15	3
16	3
17	2
18	4
19	2
20	3
21	3
22	3
23	5
24	2
25	4
26	4
27	3
28	3
29	5
30	2
31	3
32	4
33	4
34	4
35	3
36	6
37	3
38	5
39	3
40	5
41	4
42	4
43	4
44	6
45	3
46	4
47	3
48	5
49	5
50	5
51	3
52	4
53	7
54	4
55	4
56	6
57	3
58	4
59	6
60	5
61	5
62	3
63	5
64	4
65	7
66	4
67	5
68	4
69	6
70	6
71	4
72	6
73	5
74	3
75	4
76	5
77	8
78	5
79	5
80	7
81	4
82	5
83	4
84	7
85	6
86	6
87	3
88	4
89	6
90	4
91	5
92	8
93	5
94	6
95	5
96	5
97	7
98	4
99	7
100	5

n	a(n)
1	0
2	1
3	1
4	2
5	1
6	2
7	1
8	3
9	2
10	2
11	3
12	2
13	2
14	4
15	3
16	3
17	2
18	4
19	2
20	3
21	3
22	3
23	5
24	2
25	4
26	4
27	3
28	3
29	5
30	2
31	3
32	4
33	4
34	4
35	3
36	6
37	3
38	5
39	3
40	5
41	4
42	4
43	4
44	6
45	3
46	4
47	3
48	5
49	5
50	5
51	3
52	4
53	7
54	4
55	4
56	6
57	3
58	4
59	6
60	5
61	5
62	3
63	5
64	4
65	7
66	4
67	5
68	4
69	6
70	6
71	4
72	6
73	5
74	3
75	4
76	5
77	8
78	5
79	5
80	7
81	4
82	5
83	4
84	7
85	6
86	6
87	3
88	4
89	6
90	4
91	5
92	8
93	5
94	6
95	5
96	5
97	7
98	4
99	7
100	5

n	a(n)
1	0
2	1
3	1
4	2
5	1
6	2
7	1
8	3
9	2
10	2
11	3
12	2
13	2
14	4
15	3
16	3
17	2
18	4
19	2
20	3
21	3
22	3
23	5
24	2
25	4
26	4
27	3
28	3
29	5
30	2
31	3
32	4
33	4
34	4
35	3
36	6
37	3
38	5
39	3
40	5
41	4
42	4
43	4
44	6
45	3
46	4
47	3
48	5
49	5
50	5
51	3
52	4
53	7
54	4
55	4
56	6
57	3
58	4
59	6
60	5
61	5
62	3
63	5
64	4
65	7
66	4
67	5
68	4
69	6
70	6
71	4
72	6
73	5
74	3
75	4
76	5
77	8
78	5
79	5
80	7
81	4
82	5
83	4
84	7
85	6
86	6
87	3
88	4
89	6
90	4
91	5
92	8
93	5
94	6
95	5
96	5
97	7
98	4
99	7
100	5