A206347 - cp's OEIS frontend

A206347 Numbers n such that 10n+1, 20n+1, and 30*n+1 are all primes.

n	a(n)
1	21
2	27
3	33
4	60
5	117
6	153
7	222
8	228
9	306
10	426
11	480
12	495
13	558
14	585
15	615
16	636
17	669
18	684
19	762
20	768
21	819
22	852
23	894
24	909
25	1083
26	1125
27	1131
28	1224
29	1239
30	1341
31	1455
32	1512
33	1539
34	1776
35	1812
36	1845
37	2301
38	2484
39	2517
40	2541
41	2604
42	2706
43	2769
44	3093
45	3177

[21, 27, 33, 60, 117, 153, 222, 228, 306, 426, 480, 495, 558, 585, 615, 636, 669, 684, 762, 768, 819, 852, 894, 909, 1083, 1125, 1131, 1224, 1239, 1341, 1455, 1512, 1539, 1776, 1812, 1845, 2301, 2484, 2517, 2541, 2604, 2706, 2769, 3093, 3177]

cp's OEIS Frontend

A206347 Numbers n such that 10n+1, 20n+1, and 30*n+1 are all primes.

Table of values

List of values

cp's OEIS Frontend

A206347 Numbers n such that 10*n+1, 20*n+1, and 30*n+1 are all primes.

Table of values

List of values

A206347 Numbers n such that 10n+1, 20n+1, and 30*n+1 are all primes.