A377643 - cp's OEIS frontend

A377643 a(n) is the number of terms in the trajectory when the map x -> 2+sopfr(x) is iterated, starting from x = n until x = 8, with sopfr = A001414.

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

[7, 6, 5, 5, 4, 4, 3, 1, 2, 3, 6, 3, 5, 7, 4, 4, 6, 4, 5, 7, 4, 5, 5, 7, 4, 7, 7, 6, 7, 4, 6, 4, 5, 5, 8, 4, 6, 6, 5, 6, 8, 8, 7, 7, 6, 8, 6, 6, 5, 8, 6, 6, 6, 6, 5, 5, 8, 6, 7, 8, 6, 9, 5, 8, 8, 5, 8, 6, 7, 5, 7, 8, 6, 9, 5, 5, 8, 8, 9, 5, 8, 7, 9, 5, 8, 7, 6, 6, 7, 5, 6, 8, 5, 7, 8, 5, 7, 5, 6, 5]

cp's OEIS Frontend

A377643 a(n) is the number of terms in the trajectory when the map x -> 2+sopfr(x) is iterated, starting from x = n until x = 8, with sopfr = A001414.

Table of values

List of values

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

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

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