A080153 - cp's OEIS frontend

A080153 a(1)=2, a(2)=3; a(n) for n>2 is the first prime > a(n-1) such that the concatenation of a(n-1), a(n-2) and a(n) is also prime.

n	a(n)
1	2
2	3
3	11
4	23
5	31
6	41
7	59
8	79
9	97
10	107
11	113
12	151
13	163
14	179
15	197
16	223
17	227
18	241
19	257
20	271
21	337
22	383
23	433
24	439
25	467
26	491
27	547
28	619
29	773
30	797
31	853
32	883
33	887
34	911
35	967
36	977
37	1069
38	1129
39	1187
40	1223
41	1291
42	1297
43	1409
44	1483
45	1489
46	1523
47	1559
48	1567
49	1579
50	1607
51	1619

[2, 3, 11, 23, 31, 41, 59, 79, 97, 107, 113, 151, 163, 179, 197, 223, 227, 241, 257, 271, 337, 383, 433, 439, 467, 491, 547, 619, 773, 797, 853, 883, 887, 911, 967, 977, 1069, 1129, 1187, 1223, 1291, 1297, 1409, 1483, 1489, 1523, 1559, 1567, 1579, 1607, 1619]

cp's OEIS Frontend

A080153 a(1)=2, a(2)=3; a(n) for n>2 is the first prime > a(n-1) such that the concatenation of a(n-1), a(n-2) and a(n) is also prime.

Table of values

List of values