A372450 - cp's OEIS frontend

A372450 a(n) = k, if A086893(k) is the first term of A086893 reached on the trajectory of reduced Collatz-function R, when starting from 2n-1, or -1 if no term of A086893 is ever encountered.

n	a(n)
1	1
2	2
3	3
4	4
5	4
6	4
7	4
8	6
9	4
10	4
11	5
12	6
13	4
14	6
15	4
16	6
17	4
18	6
19	4
20	4
21	6
22	4
23	4
24	6
25	4
26	4
27	6
28	6
29	4
30	4
31	6
32	6
33	4
34	4
35	4
36	6
37	6
38	7
39	4
40	4
41	6
42	6
43	7
44	4
45	4
46	6
47	6
48	6
49	6
50	4
51	4
52	6
53	4
54	6
55	6
56	6
57	7
58	4
59	4
60	4
61	6
62	4
63	6
64	4
65	6
66	4
67	4
68	4
69	6
70	4
71	6
72	6
73	6
74	6
75	4
76	9
77	4
78	6
79	4
80	6
81	6
82	6
83	6
84	6
85	4
86	6
87	4
88	6
89	4
90	4
91	4
92	6
93	4
94	4
95	6
96	4
97	6
98	6
99	4
100	6
101	9
102	4
103	4
104	6
105	4
106	4
107	8
108	6

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

cp's OEIS Frontend

A372450 a(n) = k, if A086893(k) is the first term of A086893 reached on the trajectory of reduced Collatz-function R, when starting from 2n-1, or -1 if no term of A086893 is ever encountered.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	4
5	4
6	4
7	4
8	6
9	4
10	4
11	5
12	6
13	4
14	6
15	4
16	6
17	4
18	6
19	4
20	4
21	6
22	4
23	4
24	6
25	4
26	4
27	6
28	6
29	4
30	4
31	6
32	6
33	4
34	4
35	4
36	6
37	6
38	7
39	4
40	4
41	6
42	6
43	7
44	4
45	4
46	6
47	6
48	6
49	6
50	4
51	4
52	6
53	4
54	6
55	6
56	6
57	7
58	4
59	4
60	4
61	6
62	4
63	6
64	4
65	6
66	4
67	4
68	4
69	6
70	4
71	6
72	6
73	6
74	6
75	4
76	9
77	4
78	6
79	4
80	6
81	6
82	6
83	6
84	6
85	4
86	6
87	4
88	6
89	4
90	4
91	4
92	6
93	4
94	4
95	6
96	4
97	6
98	6
99	4
100	6
101	9
102	4
103	4
104	6
105	4
106	4
107	8
108	6

n	a(n)
1	1
2	2
3	3
4	4
5	4
6	4
7	4
8	6
9	4
10	4
11	5
12	6
13	4
14	6
15	4
16	6
17	4
18	6
19	4
20	4
21	6
22	4
23	4
24	6
25	4
26	4
27	6
28	6
29	4
30	4
31	6
32	6
33	4
34	4
35	4
36	6
37	6
38	7
39	4
40	4
41	6
42	6
43	7
44	4
45	4
46	6
47	6
48	6
49	6
50	4
51	4
52	6
53	4
54	6
55	6
56	6
57	7
58	4
59	4
60	4
61	6
62	4
63	6
64	4
65	6
66	4
67	4
68	4
69	6
70	4
71	6
72	6
73	6
74	6
75	4
76	9
77	4
78	6
79	4
80	6
81	6
82	6
83	6
84	6
85	4
86	6
87	4
88	6
89	4
90	4
91	4
92	6
93	4
94	4
95	6
96	4
97	6
98	6
99	4
100	6
101	9
102	4
103	4
104	6
105	4
106	4
107	8
108	6

n	a(n)
1	1
2	2
3	3
4	4
5	4
6	4
7	4
8	6
9	4
10	4
11	5
12	6
13	4
14	6
15	4
16	6
17	4
18	6
19	4
20	4
21	6
22	4
23	4
24	6
25	4
26	4
27	6
28	6
29	4
30	4
31	6
32	6
33	4
34	4
35	4
36	6
37	6
38	7
39	4
40	4
41	6
42	6
43	7
44	4
45	4
46	6
47	6
48	6
49	6
50	4
51	4
52	6
53	4
54	6
55	6
56	6
57	7
58	4
59	4
60	4
61	6
62	4
63	6
64	4
65	6
66	4
67	4
68	4
69	6
70	4
71	6
72	6
73	6
74	6
75	4
76	9
77	4
78	6
79	4
80	6
81	6
82	6
83	6
84	6
85	4
86	6
87	4
88	6
89	4
90	4
91	4
92	6
93	4
94	4
95	6
96	4
97	6
98	6
99	4
100	6
101	9
102	4
103	4
104	6
105	4
106	4
107	8
108	6