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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.

A256480 Smallest prime obtained by appending n to a nonzero number with identical digits or 0 if no such prime exists.

Table of values

n a(n)
0 0
1 11
2 0
3 13
4 0
5 0
6 0
7 17
8 0
9 19
10 0
11 211
12 0
13 113
14 0
15 0
16 0
17 317
18 0
19 419
20 0
21 421
22 0
23 223
24 0
25 0
26 0
27 127
28 0
29 229
30 0
31 131
32 0
33 233
34 0
35 0
36 0
37 137
38 0
39 139
40 0
41 241
42 0
43 443
44 0
45 0
46 0
47 347
48 0
49 149
50 0
51 151
52 0
53 353
54 0
55 0
56 0
57 157
58 0
59 359
60 0
61 461
62 0
63 163
64 0
65 0
66 0
67 167
68 0
69 269

List of values

[0, 11, 0, 13, 0, 0, 0, 17, 0, 19, 0, 211, 0, 113, 0, 0, 0, 317, 0, 419, 0, 421, 0, 223, 0, 0, 0, 127, 0, 229, 0, 131, 0, 233, 0, 0, 0, 137, 0, 139, 0, 241, 0, 443, 0, 0, 0, 347, 0, 149, 0, 151, 0, 353, 0, 0, 0, 157, 0, 359, 0, 461, 0, 163, 0, 0, 0, 167, 0, 269]

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

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