A351123 - cp's OEIS frontend

A351123 Irregular triangle read by rows: row n lists the partial sums of the number of divisions by 2 after each tripling step in the Collatz trajectory of 2n+1.

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

[1, 5, 4, 1, 2, 4, 7, 11, 2, 3, 4, 6, 9, 13, 1, 3, 6, 10, 3, 7, 1, 2, 3, 8, 12, 2, 5, 9, 1, 4, 5, 7, 10, 14, 6, 1, 2, 7, 11, 2, 3, 6, 7, 9, 12, 16, 1, 3, 4, 5, 6, 7, 9, 11, 12, 14, 15, 16, 18, 19, 20, 21, 23, 26, 27, 28, 30, 31, 33, 34, 35, 36, 37, 38, 41, 42, 43, 44, 48, 50, 52, 56, 59, 60, 61, 66, 70]

cp's OEIS Frontend

A351123 Irregular triangle read by rows: row n lists the partial sums of the number of divisions by 2 after each tripling step in the Collatz trajectory of 2n+1.

Table of values

List of values

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

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

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