A095955 - cp's OEIS frontend

A095955 Function f(x) = phi(sigma(x)) is iterated with initial value n; a(n) is the length of the cycle into which the trajectory merges.

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

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

cp's OEIS Frontend

A095955 Function f(x) = phi(sigma(x)) is iterated with initial value n; a(n) is the length of the cycle into which the trajectory merges.

Table of values

List of values

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

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

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