A102380 - cp's OEIS frontend

A102380 Irregular triangle read by rows in which row n lists prime factors (with multiplicity) of the repunit (10^n - 1)/9 (A002275(n)).

n	a(n)
1	1
2	11
3	3
4	37
5	11
6	101
7	41
8	271
9	3
10	7
11	11
12	13
13	37
14	239
15	4649
16	11
17	73
18	101
19	137
20	3
21	3
22	37
23	333667
24	11
25	41
26	271
27	9091
28	21649
29	513239
30	3
31	7
32	11
33	13
34	37
35	101
36	9901
37	53
38	79
39	265371653
40	11
41	239
42	4649
43	909091
44	3
45	31
46	37
47	41
48	271
49	2906161
50	11
51	17
52	73
53	101

[1, 11, 3, 37, 11, 101, 41, 271, 3, 7, 11, 13, 37, 239, 4649, 11, 73, 101, 137, 3, 3, 37, 333667, 11, 41, 271, 9091, 21649, 513239, 3, 7, 11, 13, 37, 101, 9901, 53, 79, 265371653, 11, 239, 4649, 909091, 3, 31, 37, 41, 271, 2906161, 11, 17, 73, 101]

cp's OEIS Frontend

A102380 Irregular triangle read by rows in which row n lists prime factors (with multiplicity) of the repunit (10^n - 1)/9 (A002275(n)).

Table of values

List of values