A102500 - cp's OEIS frontend

A102500 Values of n for which the concatenation 7nn7 (from sequence A100897) are primes.

n	a(n)
1	15
2	18
3	19
4	34
5	36
6	39
7	48
8	52
9	57
10	60
11	67
12	75
13	79
14	81
15	85
16	96
17	97
18	1005
19	1020
20	1030
21	1047
22	1054
23	1062
24	1065
25	1074
26	1084
27	1086
28	1090
29	1096
30	1108
31	1128
32	1152
33	1153
34	1164
35	1171
36	1173
37	1179
38	1182
39	1185
40	1189
41	1213
42	1215
43	1219
44	1228
45	1231
46	1233
47	1257
48	1269
49	1279

[15, 18, 19, 34, 36, 39, 48, 52, 57, 60, 67, 75, 79, 81, 85, 96, 97, 1005, 1020, 1030, 1047, 1054, 1062, 1065, 1074, 1084, 1086, 1090, 1096, 1108, 1128, 1152, 1153, 1164, 1171, 1173, 1179, 1182, 1185, 1189, 1213, 1215, 1219, 1228, 1231, 1233, 1257, 1269, 1279]

cp's OEIS Frontend

A102500 Values of n for which the concatenation 7nn7 (from sequence A100897) are primes.

Table of values

List of values