A097026 - cp's OEIS frontend

A097026 Function f(x) = phi(x) + floor(x/2) is iterated, starting at x=n; a(n) is the length of terminal cycle (or 0 if no finite cycle exists).

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

[1, 1, 1, 1, 2, 2, 2, 1, 2, 2, 1, 2, 1, 1, 1, 1, 1, 1, 2, 1, 2, 2, 4, 1, 1, 1, 2, 1, 4, 4, 2, 1, 4, 4, 2, 4, 2, 2, 6, 4, 2, 4, 6, 4, 2, 2, 6, 4, 6, 2, 1, 2, 6, 2, 6, 2, 1, 1, 6, 2, 6, 6, 6, 1, 2, 6, 6, 6, 6, 6, 6, 2, 6, 6, 6, 6, 6, 6, 6, 2, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 6, 6, 6, 6, 6, 6, 6, 6, 6]

cp's OEIS Frontend

A097026 Function f(x) = phi(x) + floor(x/2) is iterated, starting at x=n; a(n) is the length of terminal cycle (or 0 if no finite cycle exists).

Table of values

List of values

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

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

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