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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.

A130042 A130041(n) is the a(n)-th composite number.

Table of values

n a(n)
2 1
3 4
4 2
5 15
6 9
7 33
8 58
9 3
10 510
11 90
12 45
13 129
14 2043
15 12925
16 6
17 227
18 599
19 288
20 13803
21 25453
22 75368
23 429
24 24
25 5
26 118133
27 255419
28 106550
29 694
30 74
31 798
32 1638477
33 650183
34 850528
35 1733925
36 32
37 1149
38 2620617
39 3173990
40 151
41 1417
42 176
43 1565
44 4489633
45 22622373

List of values

[1, 4, 2, 15, 9, 33, 58, 3, 510, 90, 45, 129, 2043, 12925, 6, 227, 599, 288, 13803, 25453, 75368, 429, 24, 5, 118133, 255419, 106550, 694, 74, 798, 1638477, 650183, 850528, 1733925, 32, 1149, 2620617, 3173990, 151, 1417, 176, 1565, 4489633, 22622373]

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

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