A246425 - cp's OEIS frontend

A246425 In the Collatz 3x+1 problem: start at an odd number 2n+1 and find the next odd number 2m+1 in the trajectory; then a(n) = m-n.

n	a(n)
0	0
1	1
2	-2
3	2
4	-1
5	3
6	-4
7	4
8	-2
9	5
10	-10
11	6
12	-3
13	7
14	-9
15	8
16	-4
17	9
18	-15
19	10
20	-5
21	11
22	-14
23	12
24	-6
25	13
26	-24
27	14
28	-7
29	15
30	-19
31	16
32	-8
33	17
34	-28
35	18
36	-9
37	19
38	-24
39	20
40	-10
41	21
42	-42
43	22
44	-11
45	23
46	-29
47	24
48	-12
49	25
50	-41
51	26
52	-13
53	27
54	-34
55	28
56	-14
57	29
58	-53
59	30
60	-15
61	31
62	-39
63	32
64	-16
65	33
66	-54
67	34
68	-17
69	35
70	-44
71	36
72	-18
73	37
74	-71
75	38
76	-19
77	39
78	-49
79	40
80	-20
81	41
82	-67
83	42
84	-21
85	43
86	-54
87	44
88	-22
89	45
90	-82
91	46
92	-23
93	47
94	-59
95	48
96	-24
97	49
98	-80
99	50

[0, 1, -2, 2, -1, 3, -4, 4, -2, 5, -10, 6, -3, 7, -9, 8, -4, 9, -15, 10, -5, 11, -14, 12, -6, 13, -24, 14, -7, 15, -19, 16, -8, 17, -28, 18, -9, 19, -24, 20, -10, 21, -42, 22, -11, 23, -29, 24, -12, 25, -41, 26, -13, 27, -34, 28, -14, 29, -53, 30, -15, 31, -39, 32, -16, 33, -54, 34, -17, 35, -44, 36, -18, 37, -71, 38, -19, 39, -49, 40, -20, 41, -67, 42, -21, 43, -54, 44, -22, 45, -82, 46, -23, 47, -59, 48, -24, 49, -80, 50]

cp's OEIS Frontend

A246425 In the Collatz 3x+1 problem: start at an odd number 2n+1 and find the next odd number 2m+1 in the trajectory; then a(n) = m-n.

Table of values

List of values

n	a(n)
0	0
1	1
2	-2
3	2
4	-1
5	3
6	-4
7	4
8	-2
9	5
10	-10
11	6
12	-3
13	7
14	-9
15	8
16	-4
17	9
18	-15
19	10
20	-5
21	11
22	-14
23	12
24	-6
25	13
26	-24
27	14
28	-7
29	15
30	-19
31	16
32	-8
33	17
34	-28
35	18
36	-9
37	19
38	-24
39	20
40	-10
41	21
42	-42
43	22
44	-11
45	23
46	-29
47	24
48	-12
49	25
50	-41
51	26
52	-13
53	27
54	-34
55	28
56	-14
57	29
58	-53
59	30
60	-15
61	31
62	-39
63	32
64	-16
65	33
66	-54
67	34
68	-17
69	35
70	-44
71	36
72	-18
73	37
74	-71
75	38
76	-19
77	39
78	-49
79	40
80	-20
81	41
82	-67
83	42
84	-21
85	43
86	-54
87	44
88	-22
89	45
90	-82
91	46
92	-23
93	47
94	-59
95	48
96	-24
97	49
98	-80
99	50

n	a(n)
0	0
1	1
2	-2
3	2
4	-1
5	3
6	-4
7	4
8	-2
9	5
10	-10
11	6
12	-3
13	7
14	-9
15	8
16	-4
17	9
18	-15
19	10
20	-5
21	11
22	-14
23	12
24	-6
25	13
26	-24
27	14
28	-7
29	15
30	-19
31	16
32	-8
33	17
34	-28
35	18
36	-9
37	19
38	-24
39	20
40	-10
41	21
42	-42
43	22
44	-11
45	23
46	-29
47	24
48	-12
49	25
50	-41
51	26
52	-13
53	27
54	-34
55	28
56	-14
57	29
58	-53
59	30
60	-15
61	31
62	-39
63	32
64	-16
65	33
66	-54
67	34
68	-17
69	35
70	-44
71	36
72	-18
73	37
74	-71
75	38
76	-19
77	39
78	-49
79	40
80	-20
81	41
82	-67
83	42
84	-21
85	43
86	-54
87	44
88	-22
89	45
90	-82
91	46
92	-23
93	47
94	-59
95	48
96	-24
97	49
98	-80
99	50

n	a(n)
0	0
1	1
2	-2
3	2
4	-1
5	3
6	-4
7	4
8	-2
9	5
10	-10
11	6
12	-3
13	7
14	-9
15	8
16	-4
17	9
18	-15
19	10
20	-5
21	11
22	-14
23	12
24	-6
25	13
26	-24
27	14
28	-7
29	15
30	-19
31	16
32	-8
33	17
34	-28
35	18
36	-9
37	19
38	-24
39	20
40	-10
41	21
42	-42
43	22
44	-11
45	23
46	-29
47	24
48	-12
49	25
50	-41
51	26
52	-13
53	27
54	-34
55	28
56	-14
57	29
58	-53
59	30
60	-15
61	31
62	-39
63	32
64	-16
65	33
66	-54
67	34
68	-17
69	35
70	-44
71	36
72	-18
73	37
74	-71
75	38
76	-19
77	39
78	-49
79	40
80	-20
81	41
82	-67
83	42
84	-21
85	43
86	-54
87	44
88	-22
89	45
90	-82
91	46
92	-23
93	47
94	-59
95	48
96	-24
97	49
98	-80
99	50