A129139 - cp's OEIS frontend

A129139 a(n) = number of positive integers which are coprime to n and are <= d(n), where d(n) = A000005(n).

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

[1, 1, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 2, 2, 2, 2, 3, 2, 2, 3, 3, 2, 3, 3, 2, 2, 2, 3, 3, 2, 4, 3, 2, 2, 3, 3, 2, 2, 2, 3, 3, 2, 2, 3, 3, 2, 3, 3, 2, 3, 4, 3, 3, 2, 2, 3, 2, 2, 4, 4, 4, 3, 2, 3, 3, 2, 2, 4, 2, 2, 3, 3, 4, 3, 2, 4, 4, 2, 2, 3, 4, 2, 3, 4, 2, 3, 4, 3, 3, 2, 4, 4, 2, 3, 4, 4, 2, 3, 2, 4, 4]

cp's OEIS Frontend

A129139 a(n) = number of positive integers which are coprime to n and are <= d(n), where d(n) = A000005(n).

Table of values

List of values

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

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

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