A366584 - cp's OEIS frontend

A366584 a(2) = a(3) = 1; for n >3, a(n) = largest prime factor of n-th Tribonacci number.

n	a(n)
2	1
3	1
4	2
5	2
6	7
7	13
8	3
9	11
10	3
11	149
12	137
13	7
14	103
15	31
16	7
17	103
18	103
19	79
20	97
21	5501
22	3469
23	919
24	51343
25	188869
26	853
27	1427
28	470077
29	239
30	313
31	307
32	73
33	883483
34	11113
35	227
36	53
37	3833
38	631
39	40093
40	4349
41	354763
42	142739687
43	45181
44	40320889337
45	71584631
46	3331
47	5500283

[1, 1, 2, 2, 7, 13, 3, 11, 3, 149, 137, 7, 103, 31, 7, 103, 103, 79, 97, 5501, 3469, 919, 51343, 188869, 853, 1427, 470077, 239, 313, 307, 73, 883483, 11113, 227, 53, 3833, 631, 40093, 4349, 354763, 142739687, 45181, 40320889337, 71584631, 3331, 5500283]

cp's OEIS Frontend

A366584 a(2) = a(3) = 1; for n >3, a(n) = largest prime factor of n-th Tribonacci number.

Table of values

List of values