A099005 - cp's OEIS frontend

A099005 Numbers k such that 410^k + 6R_k - 3 is prime, where R_k = 11...1 is the repunit (A002275) of length k.

n	a(n)
1	1
2	2
3	3
4	4
5	6
6	7
7	8
8	12
9	23
10	59
11	75
12	144
13	204
14	268
15	760
16	1216
17	1430
18	1506
19	1509
20	2804
21	2924
22	3201
23	3305
24	5753
25	9268
26	11279
27	19677
28	23414
29	28627
30	31362
31	42299
32	49119
33	63747
34	81767
35	111443
36	263720
37	264791

[1, 2, 3, 4, 6, 7, 8, 12, 23, 59, 75, 144, 204, 268, 760, 1216, 1430, 1506, 1509, 2804, 2924, 3201, 3305, 5753, 9268, 11279, 19677, 23414, 28627, 31362, 42299, 49119, 63747, 81767, 111443, 263720, 264791]

cp's OEIS Frontend

A099005 Numbers k such that 410^k + 6R_k - 3 is prime, where R_k = 11...1 is the repunit (A002275) of length k.

Table of values

List of values

cp's OEIS Frontend

A099005 Numbers k such that 4*10^k + 6*R_k - 3 is prime, where R_k = 11...1 is the repunit (A002275) of length k.

Table of values

List of values

A099005 Numbers k such that 410^k + 6R_k - 3 is prime, where R_k = 11...1 is the repunit (A002275) of length k.