cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A113584 Beginning with 3, least prime such that concatenation of first n terms and its digit reversal both are primes.

Table of values

n a(n)
1 3
2 7
3 3
4 3
5 43
6 101
7 19
8 269
9 1873
10 41
11 241
12 3137
13 139
14 9011
15 9187
16 641
17 29881
18 12227
19 3169
20 13499
21 8539
22 7019
23 19447
24 12899
25 73243
26 124769
27 1063
28 37847
29 127
30 32321
31 104287
32 3407
33 93553
34 256643
35 165469
36 744659
37 60217
38 54773
39 49297
40 214457
41 314077
42 271409
43 602383
44 56921
45 193051
46 255383
47 75991
48 25667
49 583147
50 121019

List of values

[3, 7, 3, 3, 43, 101, 19, 269, 1873, 41, 241, 3137, 139, 9011, 9187, 641, 29881, 12227, 3169, 13499, 8539, 7019, 19447, 12899, 73243, 124769, 1063, 37847, 127, 32321, 104287, 3407, 93553, 256643, 165469, 744659, 60217, 54773, 49297, 214457, 314077, 271409, 602383, 56921, 193051, 255383, 75991, 25667, 583147, 121019]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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