A034595 - cp's OEIS frontend

A034595 Concatenation of 'nextprime(a(n)) and a(n)' and 'a(n) and nextprime(a(n))' are both prime.

n	a(n)
1	27
2	51
3	63
4	123
5	199
6	217
7	219
8	233
9	257
10	341
11	353
12	357
13	417
14	423
15	429
16	473
17	501
18	519
19	523
20	551
21	579
22	597
23	609
24	653
25	657
26	667
27	669
28	687
29	703
30	717
31	777
32	783
33	801
34	873
35	891
36	971
37	987
38	1017
39	1043
40	1139
41	1157
42	1161
43	1271
44	1337
45	1343
46	1389
47	1671
48	1973
49	2019

[27, 51, 63, 123, 199, 217, 219, 233, 257, 341, 353, 357, 417, 423, 429, 473, 501, 519, 523, 551, 579, 597, 609, 653, 657, 667, 669, 687, 703, 717, 777, 783, 801, 873, 891, 971, 987, 1017, 1043, 1139, 1157, 1161, 1271, 1337, 1343, 1389, 1671, 1973, 2019]

cp's OEIS Frontend

A034595 Concatenation of 'nextprime(a(n)) and a(n)' and 'a(n) and nextprime(a(n))' are both prime.

Table of values

List of values