A304464 - cp's OEIS frontend

A304464 Start with the normalized multiset of prime factors of n > 1. Given a multiset, take the multiset of its multiplicities. Repeat this until a multiset of size 1 is obtained. a(n) is the unique element of this multiset.

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

[0, 1, 2, 2, 3, 2, 4, 3, 2, 2, 5, 2, 6, 2, 2, 4, 7, 2, 8, 2, 2, 2, 9, 2, 2, 2, 3, 2, 10, 3, 11, 5, 2, 2, 2, 2, 12, 2, 2, 2, 13, 3, 14, 2, 2, 2, 15, 2, 2, 2, 2, 2, 16, 2, 2, 2, 2, 2, 17, 2, 18, 2, 2, 6, 2, 3, 19, 2, 2, 3, 20, 2, 21, 2, 2, 2, 2, 3, 22, 2, 4, 2, 23]

cp's OEIS Frontend

A304464 Start with the normalized multiset of prime factors of n > 1. Given a multiset, take the multiset of its multiplicities. Repeat this until a multiset of size 1 is obtained. a(n) is the unique element of this multiset.

Table of values

List of values

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

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

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