A339904 - cp's OEIS frontend

A339904 The odd part of {Euler totient function phi applied to the prime shifted n}: a(n) = A000265(A000010(A003961(n))).

n	a(n)
1	1
2	1
3	1
4	3
5	3
6	1
7	5
8	9
9	5
10	3
11	3
12	3
13	1
14	5
15	3
16	27
17	9
18	5
19	11
20	9
21	5
22	3
23	7
24	9
25	21
26	1
27	25
28	15
29	15
30	3
31	9
32	81
33	3
34	9
35	15
36	15
37	5
38	11
39	1
40	27
41	21
42	5
43	23
44	9
45	15
46	7
47	13
48	27
49	55
50	21
51	9
52	3
53	29
54	25
55	9
56	45
57	11
58	15
59	15
60	9
61	33
62	9
63	25
64	243
65	3
66	3
67	35
68	27
69	7
70	15
71	9
72	45
73	39
74	5
75	21
76	33
77	15
78	1
79	41
80	81
81	125
82	21
83	11
84	15
85	27
86	23
87	15
88	27
89	3
90	15

[1, 1, 1, 3, 3, 1, 5, 9, 5, 3, 3, 3, 1, 5, 3, 27, 9, 5, 11, 9, 5, 3, 7, 9, 21, 1, 25, 15, 15, 3, 9, 81, 3, 9, 15, 15, 5, 11, 1, 27, 21, 5, 23, 9, 15, 7, 13, 27, 55, 21, 9, 3, 29, 25, 9, 45, 11, 15, 15, 9, 33, 9, 25, 243, 3, 3, 35, 27, 7, 15, 9, 45, 39, 5, 21, 33, 15, 1, 41, 81, 125, 21, 11, 15, 27, 23, 15, 27, 3, 15]

cp's OEIS Frontend

A339904 The odd part of {Euler totient function phi applied to the prime shifted n}: a(n) = A000265(A000010(A003961(n))).

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	3
5	3
6	1
7	5
8	9
9	5
10	3
11	3
12	3
13	1
14	5
15	3
16	27
17	9
18	5
19	11
20	9
21	5
22	3
23	7
24	9
25	21
26	1
27	25
28	15
29	15
30	3
31	9
32	81
33	3
34	9
35	15
36	15
37	5
38	11
39	1
40	27
41	21
42	5
43	23
44	9
45	15
46	7
47	13
48	27
49	55
50	21
51	9
52	3
53	29
54	25
55	9
56	45
57	11
58	15
59	15
60	9
61	33
62	9
63	25
64	243
65	3
66	3
67	35
68	27
69	7
70	15
71	9
72	45
73	39
74	5
75	21
76	33
77	15
78	1
79	41
80	81
81	125
82	21
83	11
84	15
85	27
86	23
87	15
88	27
89	3
90	15

n	a(n)
1	1
2	1
3	1
4	3
5	3
6	1
7	5
8	9
9	5
10	3
11	3
12	3
13	1
14	5
15	3
16	27
17	9
18	5
19	11
20	9
21	5
22	3
23	7
24	9
25	21
26	1
27	25
28	15
29	15
30	3
31	9
32	81
33	3
34	9
35	15
36	15
37	5
38	11
39	1
40	27
41	21
42	5
43	23
44	9
45	15
46	7
47	13
48	27
49	55
50	21
51	9
52	3
53	29
54	25
55	9
56	45
57	11
58	15
59	15
60	9
61	33
62	9
63	25
64	243
65	3
66	3
67	35
68	27
69	7
70	15
71	9
72	45
73	39
74	5
75	21
76	33
77	15
78	1
79	41
80	81
81	125
82	21
83	11
84	15
85	27
86	23
87	15
88	27
89	3
90	15

n	a(n)
1	1
2	1
3	1
4	3
5	3
6	1
7	5
8	9
9	5
10	3
11	3
12	3
13	1
14	5
15	3
16	27
17	9
18	5
19	11
20	9
21	5
22	3
23	7
24	9
25	21
26	1
27	25
28	15
29	15
30	3
31	9
32	81
33	3
34	9
35	15
36	15
37	5
38	11
39	1
40	27
41	21
42	5
43	23
44	9
45	15
46	7
47	13
48	27
49	55
50	21
51	9
52	3
53	29
54	25
55	9
56	45
57	11
58	15
59	15
60	9
61	33
62	9
63	25
64	243
65	3
66	3
67	35
68	27
69	7
70	15
71	9
72	45
73	39
74	5
75	21
76	33
77	15
78	1
79	41
80	81
81	125
82	21
83	11
84	15
85	27
86	23
87	15
88	27
89	3
90	15