A352939 - cp's OEIS frontend

A352939 First differences of the records in the number of iterations of the 3x+1 sequences required to reach a power of 2.

n	a(n)
1	3
2	1
3	8
4	3
5	1
6	3
7	88
8	1
9	3
10	3
11	3
12	3
13	3
14	3
15	13
16	1
17	26
18	8
19	3
20	1
21	26
22	8
23	21
24	24
25	6
26	8
27	3
28	3
29	26
30	3
31	13
32	16
33	11
34	3
35	21
36	8
37	3
38	57
39	6
40	21
41	39
42	16
43	3
44	3
45	26
46	3
47	3
48	21
49	13
50	16
51	52
52	21
53	3
54	3
55	13
56	1
57	39
58	205
59	1
60	3
61	3
62	8
63	1
64	21
65	1
66	13
67	8
68	42
69	37
70	44
71	1
72	21
73	31
74	26
75	3
76	6
77	1
78	8
79	6
80	8
81	13
82	52
83	1
84	13
85	3
86	8
87	3
88	13
89	8
90	52
91	3
92	26
93	3

[3, 1, 8, 3, 1, 3, 88, 1, 3, 3, 3, 3, 3, 3, 13, 1, 26, 8, 3, 1, 26, 8, 21, 24, 6, 8, 3, 3, 26, 3, 13, 16, 11, 3, 21, 8, 3, 57, 6, 21, 39, 16, 3, 3, 26, 3, 3, 21, 13, 16, 52, 21, 3, 3, 13, 1, 39, 205, 1, 3, 3, 8, 1, 21, 1, 13, 8, 42, 37, 44, 1, 21, 31, 26, 3, 6, 1, 8, 6, 8, 13, 52, 1, 13, 3, 8, 3, 13, 8, 52, 3, 26, 3]

cp's OEIS Frontend

A352939 First differences of the records in the number of iterations of the 3x+1 sequences required to reach a power of 2.

Table of values

List of values

n	a(n)
1	3
2	1
3	8
4	3
5	1
6	3
7	88
8	1
9	3
10	3
11	3
12	3
13	3
14	3
15	13
16	1
17	26
18	8
19	3
20	1
21	26
22	8
23	21
24	24
25	6
26	8
27	3
28	3
29	26
30	3
31	13
32	16
33	11
34	3
35	21
36	8
37	3
38	57
39	6
40	21
41	39
42	16
43	3
44	3
45	26
46	3
47	3
48	21
49	13
50	16
51	52
52	21
53	3
54	3
55	13
56	1
57	39
58	205
59	1
60	3
61	3
62	8
63	1
64	21
65	1
66	13
67	8
68	42
69	37
70	44
71	1
72	21
73	31
74	26
75	3
76	6
77	1
78	8
79	6
80	8
81	13
82	52
83	1
84	13
85	3
86	8
87	3
88	13
89	8
90	52
91	3
92	26
93	3

n	a(n)
1	3
2	1
3	8
4	3
5	1
6	3
7	88
8	1
9	3
10	3
11	3
12	3
13	3
14	3
15	13
16	1
17	26
18	8
19	3
20	1
21	26
22	8
23	21
24	24
25	6
26	8
27	3
28	3
29	26
30	3
31	13
32	16
33	11
34	3
35	21
36	8
37	3
38	57
39	6
40	21
41	39
42	16
43	3
44	3
45	26
46	3
47	3
48	21
49	13
50	16
51	52
52	21
53	3
54	3
55	13
56	1
57	39
58	205
59	1
60	3
61	3
62	8
63	1
64	21
65	1
66	13
67	8
68	42
69	37
70	44
71	1
72	21
73	31
74	26
75	3
76	6
77	1
78	8
79	6
80	8
81	13
82	52
83	1
84	13
85	3
86	8
87	3
88	13
89	8
90	52
91	3
92	26
93	3

n	a(n)
1	3
2	1
3	8
4	3
5	1
6	3
7	88
8	1
9	3
10	3
11	3
12	3
13	3
14	3
15	13
16	1
17	26
18	8
19	3
20	1
21	26
22	8
23	21
24	24
25	6
26	8
27	3
28	3
29	26
30	3
31	13
32	16
33	11
34	3
35	21
36	8
37	3
38	57
39	6
40	21
41	39
42	16
43	3
44	3
45	26
46	3
47	3
48	21
49	13
50	16
51	52
52	21
53	3
54	3
55	13
56	1
57	39
58	205
59	1
60	3
61	3
62	8
63	1
64	21
65	1
66	13
67	8
68	42
69	37
70	44
71	1
72	21
73	31
74	26
75	3
76	6
77	1
78	8
79	6
80	8
81	13
82	52
83	1
84	13
85	3
86	8
87	3
88	13
89	8
90	52
91	3
92	26
93	3