A074340 - cp's OEIS frontend

A074340 a(1) = 5; a(n) is smallest number > a(n-1) such that the juxtaposition a(1)a(2)...a(n) is a prime.

n	a(n)
1	5
2	9
3	23
4	37
5	39
6	47
7	57
8	97
9	119
10	187
11	257
12	271
13	273
14	281
15	309
16	367
17	449
18	529
19	687
20	759
21	933
22	1031
23	1131
24	1237
25	1263
26	1343
27	1731
28	1861
29	2177
30	2337
31	2589
32	2607
33	2743
34	3191
35	3199
36	3281
37	3499
38	3807
39	3867
40	4133
41	6079
42	6189
43	6593
44	7207
45	7479
46	7523
47	8569
48	8571

[5, 9, 23, 37, 39, 47, 57, 97, 119, 187, 257, 271, 273, 281, 309, 367, 449, 529, 687, 759, 933, 1031, 1131, 1237, 1263, 1343, 1731, 1861, 2177, 2337, 2589, 2607, 2743, 3191, 3199, 3281, 3499, 3807, 3867, 4133, 6079, 6189, 6593, 7207, 7479, 7523, 8569, 8571]

cp's OEIS Frontend

A074340 a(1) = 5; a(n) is smallest number > a(n-1) such that the juxtaposition a(1)a(2)...a(n) is a prime.

Table of values

List of values