A347271 - cp's OEIS frontend

A347271 Irregular triangle T(n,k) read by rows in which row n lists the terms of the 3x+1 trajectory of n, but the row ends when a term is a power of 2 or when a term is less than n, with n >= 1 and k >= 0.

n	a(n)
1	1
2	2
3	3
4	10
5	5
6	16
7	4
8	5
9	16
10	6
11	3
12	7
13	22
14	11
15	34
16	17
17	52
18	26
19	13
20	40
21	20
22	10
23	5
24	8
25	9
26	28
27	14
28	7
29	10
30	5
31	11
32	34
33	17
34	52
35	26
36	13
37	40
38	20
39	10
40	12
41	6
42	13
43	40
44	20
45	10
46	14
47	7
48	15
49	46
50	23
51	70
52	35
53	106
54	53
55	160
56	80
57	40
58	20
59	10
60	16
61	17
62	52
63	26
64	13
65	18
66	9
67	19
68	58
69	29
70	88
71	44
72	22
73	11

[1, 2, 3, 10, 5, 16, 4, 5, 16, 6, 3, 7, 22, 11, 34, 17, 52, 26, 13, 40, 20, 10, 5, 8, 9, 28, 14, 7, 10, 5, 11, 34, 17, 52, 26, 13, 40, 20, 10, 12, 6, 13, 40, 20, 10, 14, 7, 15, 46, 23, 70, 35, 106, 53, 160, 80, 40, 20, 10, 16, 17, 52, 26, 13, 18, 9, 19, 58, 29, 88, 44, 22, 11]

cp's OEIS Frontend

A347271 Irregular triangle T(n,k) read by rows in which row n lists the terms of the 3x+1 trajectory of n, but the row ends when a term is a power of 2 or when a term is less than n, with n >= 1 and k >= 0.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	10
5	5
6	16
7	4
8	5
9	16
10	6
11	3
12	7
13	22
14	11
15	34
16	17
17	52
18	26
19	13
20	40
21	20
22	10
23	5
24	8
25	9
26	28
27	14
28	7
29	10
30	5
31	11
32	34
33	17
34	52
35	26
36	13
37	40
38	20
39	10
40	12
41	6
42	13
43	40
44	20
45	10
46	14
47	7
48	15
49	46
50	23
51	70
52	35
53	106
54	53
55	160
56	80
57	40
58	20
59	10
60	16
61	17
62	52
63	26
64	13
65	18
66	9
67	19
68	58
69	29
70	88
71	44
72	22
73	11

n	a(n)
1	1
2	2
3	3
4	10
5	5
6	16
7	4
8	5
9	16
10	6
11	3
12	7
13	22
14	11
15	34
16	17
17	52
18	26
19	13
20	40
21	20
22	10
23	5
24	8
25	9
26	28
27	14
28	7
29	10
30	5
31	11
32	34
33	17
34	52
35	26
36	13
37	40
38	20
39	10
40	12
41	6
42	13
43	40
44	20
45	10
46	14
47	7
48	15
49	46
50	23
51	70
52	35
53	106
54	53
55	160
56	80
57	40
58	20
59	10
60	16
61	17
62	52
63	26
64	13
65	18
66	9
67	19
68	58
69	29
70	88
71	44
72	22
73	11

n	a(n)
1	1
2	2
3	3
4	10
5	5
6	16
7	4
8	5
9	16
10	6
11	3
12	7
13	22
14	11
15	34
16	17
17	52
18	26
19	13
20	40
21	20
22	10
23	5
24	8
25	9
26	28
27	14
28	7
29	10
30	5
31	11
32	34
33	17
34	52
35	26
36	13
37	40
38	20
39	10
40	12
41	6
42	13
43	40
44	20
45	10
46	14
47	7
48	15
49	46
50	23
51	70
52	35
53	106
54	53
55	160
56	80
57	40
58	20
59	10
60	16
61	17
62	52
63	26
64	13
65	18
66	9
67	19
68	58
69	29
70	88
71	44
72	22
73	11