A239547 - cp's OEIS frontend

A239547 a(1) = 1; a(n) is smallest number > a(n-1) such that the juxtaposition a(n)a(n-1)...a(1) is a prime.

n	a(n)
1	1
2	3
3	4
4	5
5	7
6	14
7	21
8	43
9	56
10	96
11	141
12	178
13	180
14	198
15	263
16	271
17	315
18	347
19	352
20	471
21	530
22	565
23	588
24	707
25	711
26	793
27	812
28	850
29	887
30	952
31	1083
32	1214
33	1218
34	1266
35	1564
36	1661
37	1686
38	1744
39	1976
40	2047
41	2066
42	2166
43	2268
44	2412
45	2740
46	2777
47	2895
48	2905
49	3056
50	3058
51	3293

[1, 3, 4, 5, 7, 14, 21, 43, 56, 96, 141, 178, 180, 198, 263, 271, 315, 347, 352, 471, 530, 565, 588, 707, 711, 793, 812, 850, 887, 952, 1083, 1214, 1218, 1266, 1564, 1661, 1686, 1744, 1976, 2047, 2066, 2166, 2268, 2412, 2740, 2777, 2895, 2905, 3056, 3058, 3293]

cp's OEIS Frontend

A239547 a(1) = 1; a(n) is smallest number > a(n-1) such that the juxtaposition a(n)a(n-1)...a(1) is a prime.

Table of values

List of values