A322874 - cp's OEIS frontend

A322874 Ordinal transform of A007431, which is Möbius transform of Euler phi.

n	a(n)
1	1
2	1
3	2
4	3
5	1
6	2
7	1
8	1
9	1
10	3
11	1
12	4
13	1
14	4
15	2
16	2
17	1
18	5
19	1
20	3
21	2
22	6
23	1
24	2
25	1
26	7
27	1
28	3
29	1
30	8
31	1
32	1
33	2
34	9
35	2
36	3
37	1
38	10
39	2
40	1
41	1
42	11
43	1
44	3
45	2
46	12
47	1
48	4
49	1
50	13
51	3
52	3
53	1
54	14
55	2
56	1
57	2
58	15
59	1
60	4
61	1
62	16
63	1
64	2
65	1
66	17
67	1
68	4
69	2
70	18
71	1
72	2
73	1
74	19
75	3
76	3
77	2
78	20
79	1
80	3
81	2
82	21
83	1
84	4
85	3
86	22
87	3
88	1
89	1
90	23
91	1
92	3
93	2
94	24
95	2
96	3
97	1
98	25
99	3
100	4
101	1
102	26
103	1
104	1
105	5

[1, 1, 2, 3, 1, 2, 1, 1, 1, 3, 1, 4, 1, 4, 2, 2, 1, 5, 1, 3, 2, 6, 1, 2, 1, 7, 1, 3, 1, 8, 1, 1, 2, 9, 2, 3, 1, 10, 2, 1, 1, 11, 1, 3, 2, 12, 1, 4, 1, 13, 3, 3, 1, 14, 2, 1, 2, 15, 1, 4, 1, 16, 1, 2, 1, 17, 1, 4, 2, 18, 1, 2, 1, 19, 3, 3, 2, 20, 1, 3, 2, 21, 1, 4, 3, 22, 3, 1, 1, 23, 1, 3, 2, 24, 2, 3, 1, 25, 3, 4, 1, 26, 1, 1, 5]

cp's OEIS Frontend

A322874 Ordinal transform of A007431, which is Möbius transform of Euler phi.

Table of values

List of values

n	a(n)
1	1
2	1
3	2
4	3
5	1
6	2
7	1
8	1
9	1
10	3
11	1
12	4
13	1
14	4
15	2
16	2
17	1
18	5
19	1
20	3
21	2
22	6
23	1
24	2
25	1
26	7
27	1
28	3
29	1
30	8
31	1
32	1
33	2
34	9
35	2
36	3
37	1
38	10
39	2
40	1
41	1
42	11
43	1
44	3
45	2
46	12
47	1
48	4
49	1
50	13
51	3
52	3
53	1
54	14
55	2
56	1
57	2
58	15
59	1
60	4
61	1
62	16
63	1
64	2
65	1
66	17
67	1
68	4
69	2
70	18
71	1
72	2
73	1
74	19
75	3
76	3
77	2
78	20
79	1
80	3
81	2
82	21
83	1
84	4
85	3
86	22
87	3
88	1
89	1
90	23
91	1
92	3
93	2
94	24
95	2
96	3
97	1
98	25
99	3
100	4
101	1
102	26
103	1
104	1
105	5

n	a(n)
1	1
2	1
3	2
4	3
5	1
6	2
7	1
8	1
9	1
10	3
11	1
12	4
13	1
14	4
15	2
16	2
17	1
18	5
19	1
20	3
21	2
22	6
23	1
24	2
25	1
26	7
27	1
28	3
29	1
30	8
31	1
32	1
33	2
34	9
35	2
36	3
37	1
38	10
39	2
40	1
41	1
42	11
43	1
44	3
45	2
46	12
47	1
48	4
49	1
50	13
51	3
52	3
53	1
54	14
55	2
56	1
57	2
58	15
59	1
60	4
61	1
62	16
63	1
64	2
65	1
66	17
67	1
68	4
69	2
70	18
71	1
72	2
73	1
74	19
75	3
76	3
77	2
78	20
79	1
80	3
81	2
82	21
83	1
84	4
85	3
86	22
87	3
88	1
89	1
90	23
91	1
92	3
93	2
94	24
95	2
96	3
97	1
98	25
99	3
100	4
101	1
102	26
103	1
104	1
105	5

n	a(n)
1	1
2	1
3	2
4	3
5	1
6	2
7	1
8	1
9	1
10	3
11	1
12	4
13	1
14	4
15	2
16	2
17	1
18	5
19	1
20	3
21	2
22	6
23	1
24	2
25	1
26	7
27	1
28	3
29	1
30	8
31	1
32	1
33	2
34	9
35	2
36	3
37	1
38	10
39	2
40	1
41	1
42	11
43	1
44	3
45	2
46	12
47	1
48	4
49	1
50	13
51	3
52	3
53	1
54	14
55	2
56	1
57	2
58	15
59	1
60	4
61	1
62	16
63	1
64	2
65	1
66	17
67	1
68	4
69	2
70	18
71	1
72	2
73	1
74	19
75	3
76	3
77	2
78	20
79	1
80	3
81	2
82	21
83	1
84	4
85	3
86	22
87	3
88	1
89	1
90	23
91	1
92	3
93	2
94	24
95	2
96	3
97	1
98	25
99	3
100	4
101	1
102	26
103	1
104	1
105	5