A280408 - cp's OEIS frontend

A280408 Irregular triangle read by rows listing the prime numbers that appear from the trajectory of n in Collatz Problem.

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

[2, 2, 3, 5, 2, 2, 5, 2, 3, 5, 2, 7, 11, 17, 13, 5, 2, 2, 7, 11, 17, 13, 5, 2, 5, 2, 11, 17, 13, 5, 2, 3, 5, 2, 13, 5, 2, 7, 11, 17, 13, 5, 2, 23, 53, 5, 2, 2, 17, 13, 5, 2, 7, 11, 17, 13, 5, 2, 19, 29, 11, 17, 13, 5, 2, 5, 2, 2, 11, 17, 13, 5, 2, 23, 53, 5, 2, 3, 5, 2, 19, 29, 11, 17, 13, 5, 2]

cp's OEIS Frontend

A280408 Irregular triangle read by rows listing the prime numbers that appear from the trajectory of n in Collatz Problem.

Table of values

List of values

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

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

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