A085777 - cp's OEIS frontend

A085777 Semiprimes such that when they are concatenated with their reversal are semiprime.

n	a(n)
1	14
2	34
3	38
4	74
5	91
6	94
7	115
8	146
9	169
10	185
11	194
12	305
13	334
14	341
15	346
16	355
17	361
18	362
19	386
20	394
21	395
22	398
23	706
24	721
25	731
26	745
27	755
28	766
29	794
30	799
31	901
32	923
33	926
34	955
35	974
36	985
37	1027
38	1046
39	1094
40	1138
41	1141
42	1147
43	1174
44	1195
45	1202
46	1238
47	1247
48	1261
49	1262
50	1271

[14, 34, 38, 74, 91, 94, 115, 146, 169, 185, 194, 305, 334, 341, 346, 355, 361, 362, 386, 394, 395, 398, 706, 721, 731, 745, 755, 766, 794, 799, 901, 923, 926, 955, 974, 985, 1027, 1046, 1094, 1138, 1141, 1147, 1174, 1195, 1202, 1238, 1247, 1261, 1262, 1271]

cp's OEIS Frontend

A085777 Semiprimes such that when they are concatenated with their reversal are semiprime.

Table of values

List of values