A346965 - cp's OEIS frontend

A346965 a(n) is the number of ascending subsequences in reducing n to 1 using the Collatz reduction, or -1 if n refutes the Collatz conjecture.

n	a(n)
1	0
2	0
3	1
4	0
5	1
6	1
7	3
8	0
9	4
10	1
11	3
12	1
13	2
14	3
15	2
16	0
17	3
18	4
19	4
20	1
21	1
22	3
23	2
24	1
25	5
26	2
27	17
28	3
29	4
30	2
31	16
32	0
33	6
34	3
35	2
36	4
37	4
38	4
39	6
40	1
41	17
42	1
43	6
44	3
45	4
46	2
47	16
48	1
49	5
50	5
51	5
52	2
53	2
54	17
55	17
56	3
57	7
58	4
59	6
60	2
61	3
62	16
63	15
64	0
65	6
66	6
67	5
68	3
69	3
70	2
71	16
72	4
73	18
74	4
75	2
76	4
77	5
78	6
79	6
80	1
81	4
82	17
83	17

[0, 0, 1, 0, 1, 1, 3, 0, 4, 1, 3, 1, 2, 3, 2, 0, 3, 4, 4, 1, 1, 3, 2, 1, 5, 2, 17, 3, 4, 2, 16, 0, 6, 3, 2, 4, 4, 4, 6, 1, 17, 1, 6, 3, 4, 2, 16, 1, 5, 5, 5, 2, 2, 17, 17, 3, 7, 4, 6, 2, 3, 16, 15, 0, 6, 6, 5, 3, 3, 2, 16, 4, 18, 4, 2, 4, 5, 6, 6, 1, 4, 17, 17]

cp's OEIS Frontend

A346965 a(n) is the number of ascending subsequences in reducing n to 1 using the Collatz reduction, or -1 if n refutes the Collatz conjecture.

Table of values

List of values

n	a(n)
1	0
2	0
3	1
4	0
5	1
6	1
7	3
8	0
9	4
10	1
11	3
12	1
13	2
14	3
15	2
16	0
17	3
18	4
19	4
20	1
21	1
22	3
23	2
24	1
25	5
26	2
27	17
28	3
29	4
30	2
31	16
32	0
33	6
34	3
35	2
36	4
37	4
38	4
39	6
40	1
41	17
42	1
43	6
44	3
45	4
46	2
47	16
48	1
49	5
50	5
51	5
52	2
53	2
54	17
55	17
56	3
57	7
58	4
59	6
60	2
61	3
62	16
63	15
64	0
65	6
66	6
67	5
68	3
69	3
70	2
71	16
72	4
73	18
74	4
75	2
76	4
77	5
78	6
79	6
80	1
81	4
82	17
83	17

n	a(n)
1	0
2	0
3	1
4	0
5	1
6	1
7	3
8	0
9	4
10	1
11	3
12	1
13	2
14	3
15	2
16	0
17	3
18	4
19	4
20	1
21	1
22	3
23	2
24	1
25	5
26	2
27	17
28	3
29	4
30	2
31	16
32	0
33	6
34	3
35	2
36	4
37	4
38	4
39	6
40	1
41	17
42	1
43	6
44	3
45	4
46	2
47	16
48	1
49	5
50	5
51	5
52	2
53	2
54	17
55	17
56	3
57	7
58	4
59	6
60	2
61	3
62	16
63	15
64	0
65	6
66	6
67	5
68	3
69	3
70	2
71	16
72	4
73	18
74	4
75	2
76	4
77	5
78	6
79	6
80	1
81	4
82	17
83	17

n	a(n)
1	0
2	0
3	1
4	0
5	1
6	1
7	3
8	0
9	4
10	1
11	3
12	1
13	2
14	3
15	2
16	0
17	3
18	4
19	4
20	1
21	1
22	3
23	2
24	1
25	5
26	2
27	17
28	3
29	4
30	2
31	16
32	0
33	6
34	3
35	2
36	4
37	4
38	4
39	6
40	1
41	17
42	1
43	6
44	3
45	4
46	2
47	16
48	1
49	5
50	5
51	5
52	2
53	2
54	17
55	17
56	3
57	7
58	4
59	6
60	2
61	3
62	16
63	15
64	0
65	6
66	6
67	5
68	3
69	3
70	2
71	16
72	4
73	18
74	4
75	2
76	4
77	5
78	6
79	6
80	1
81	4
82	17
83	17