A366583 - cp's OEIS frontend

A366583 a(2) = a(3) = 1; for n >3, a(n) = smallest prime factor of n-th Tribonacci number.

n	a(n)
2	1
3	1
4	2
5	2
6	7
7	13
8	2
9	2
10	3
11	149
12	2
13	2
14	3
15	5
16	2
17	2
18	103
19	13
20	2
21	2
22	5
23	3
24	2
25	2
26	3
27	3
28	2
29	2
30	23
31	5
32	2
33	2
34	3
35	103
36	2
37	2
38	7
39	3
40	2
41	2
42	167
43	11
44	2
45	2
46	5
47	3
48	2
49	2
50	199
51	5
52	2
53	2
54	7
55	163
56	2
57	2
58	29531
59	5
60	2
61	2
62	3
63	5
64	2
65	2
66	3
67	199
68	2
69	2
70	7
71	19
72	2
73	2
74	1259
75	3
76	2
77	2
78	3
79	3

[1, 1, 2, 2, 7, 13, 2, 2, 3, 149, 2, 2, 3, 5, 2, 2, 103, 13, 2, 2, 5, 3, 2, 2, 3, 3, 2, 2, 23, 5, 2, 2, 3, 103, 2, 2, 7, 3, 2, 2, 167, 11, 2, 2, 5, 3, 2, 2, 199, 5, 2, 2, 7, 163, 2, 2, 29531, 5, 2, 2, 3, 5, 2, 2, 3, 199, 2, 2, 7, 19, 2, 2, 1259, 3, 2, 2, 3, 3]

cp's OEIS Frontend

A366583 a(2) = a(3) = 1; for n >3, a(n) = smallest prime factor of n-th Tribonacci number.

Table of values

List of values