A253676 - cp's OEIS frontend

A253676 Irregular triangle T read by rows in which row n is the result of iterating the function S defined in A257480 and terminating at the first occurrence of 1, assuming the 3x+1 (or Collatz) conjecture.

n	a(n)
1	1
2	2
3	1
4	3
5	5
6	4
7	2
8	1
9	4
10	2
11	1
12	5
13	4
14	2
15	1
16	6
17	1
18	7
19	8
20	5
21	4
22	2
23	1
24	8
25	5
26	4
27	2
28	1
29	9
30	7
31	8
32	5
33	4
34	2
35	1
36	10
37	5
38	4
39	2
40	1
41	11
42	41
43	31
44	35
45	59
46	149
47	112
48	95
49	107
50	608
51	770
52	145
53	109
54	82
55	16
56	14
57	2
58	1
59	12
60	5
61	4
62	2
63	1
64	13
65	10
66	5
67	4
68	2
69	1
70	14
71	2
72	1
73	15
74	17
75	13
76	10
77	5
78	4
79	2
80	1

[1, 2, 1, 3, 5, 4, 2, 1, 4, 2, 1, 5, 4, 2, 1, 6, 1, 7, 8, 5, 4, 2, 1, 8, 5, 4, 2, 1, 9, 7, 8, 5, 4, 2, 1, 10, 5, 4, 2, 1, 11, 41, 31, 35, 59, 149, 112, 95, 107, 608, 770, 145, 109, 82, 16, 14, 2, 1, 12, 5, 4, 2, 1, 13, 10, 5, 4, 2, 1, 14, 2, 1, 15, 17, 13, 10, 5, 4, 2, 1]

cp's OEIS Frontend

A253676 Irregular triangle T read by rows in which row n is the result of iterating the function S defined in A257480 and terminating at the first occurrence of 1, assuming the 3x+1 (or Collatz) conjecture.

Table of values

List of values

n	a(n)
1	1
2	2
3	1
4	3
5	5
6	4
7	2
8	1
9	4
10	2
11	1
12	5
13	4
14	2
15	1
16	6
17	1
18	7
19	8
20	5
21	4
22	2
23	1
24	8
25	5
26	4
27	2
28	1
29	9
30	7
31	8
32	5
33	4
34	2
35	1
36	10
37	5
38	4
39	2
40	1
41	11
42	41
43	31
44	35
45	59
46	149
47	112
48	95
49	107
50	608
51	770
52	145
53	109
54	82
55	16
56	14
57	2
58	1
59	12
60	5
61	4
62	2
63	1
64	13
65	10
66	5
67	4
68	2
69	1
70	14
71	2
72	1
73	15
74	17
75	13
76	10
77	5
78	4
79	2
80	1

n	a(n)
1	1
2	2
3	1
4	3
5	5
6	4
7	2
8	1
9	4
10	2
11	1
12	5
13	4
14	2
15	1
16	6
17	1
18	7
19	8
20	5
21	4
22	2
23	1
24	8
25	5
26	4
27	2
28	1
29	9
30	7
31	8
32	5
33	4
34	2
35	1
36	10
37	5
38	4
39	2
40	1
41	11
42	41
43	31
44	35
45	59
46	149
47	112
48	95
49	107
50	608
51	770
52	145
53	109
54	82
55	16
56	14
57	2
58	1
59	12
60	5
61	4
62	2
63	1
64	13
65	10
66	5
67	4
68	2
69	1
70	14
71	2
72	1
73	15
74	17
75	13
76	10
77	5
78	4
79	2
80	1

n	a(n)
1	1
2	2
3	1
4	3
5	5
6	4
7	2
8	1
9	4
10	2
11	1
12	5
13	4
14	2
15	1
16	6
17	1
18	7
19	8
20	5
21	4
22	2
23	1
24	8
25	5
26	4
27	2
28	1
29	9
30	7
31	8
32	5
33	4
34	2
35	1
36	10
37	5
38	4
39	2
40	1
41	11
42	41
43	31
44	35
45	59
46	149
47	112
48	95
49	107
50	608
51	770
52	145
53	109
54	82
55	16
56	14
57	2
58	1
59	12
60	5
61	4
62	2
63	1
64	13
65	10
66	5
67	4
68	2
69	1
70	14
71	2
72	1
73	15
74	17
75	13
76	10
77	5
78	4
79	2
80	1