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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.

A097487 Write the nonprime positive integers on labels in numerical order, forming an infinite sequence L. Now consider the succession of single digits of A000040 (prime numbers): 2 3 5 7 1 1 1 3 1 7 1 9 2 3 2 9 3 1 3 7 4 1 4 3 4 7 5 3 ... (A033308). This sequence gives an arrangement L that produces the same succession of digits, subject to the constraint that the smallest unused label must be used that does not lead to a contradiction.

Table of values

n a(n)
1 235
2 711
3 1
4 3171
5 9
6 232
7 93
8 1374
9 14
10 34
11 75
12 35
13 96
14 16
15 77
16 1737
17 98
18 38
19 99
20 710
21 110
22 310
23 71091
24 1312
25 713
26 1137
27 1391
28 4
29 91
30 51
31 15
32 716
33 316
34 717
35 3179
36 18
37 119
38 11931
39 97199
40 21
41 12
42 2322
43 72
44 292
45 33
46 2392
47 412
48 512
49 57
50 26
51 32
52 6
53 92
54 712
55 772
56 8

List of values

[235, 711, 1, 3171, 9, 232, 93, 1374, 14, 34, 75, 35, 96, 16, 77, 1737, 98, 38, 99, 710, 110, 310, 71091, 1312, 713, 1137, 1391, 4, 91, 51, 15, 716, 316, 717, 3179, 18, 119, 11931, 97199, 21, 12, 2322, 72, 292, 33, 2392, 412, 512, 57, 26, 32, 6, 92, 712, 772, 8]

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