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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.

A006999 Partitioning integers to avoid arithmetic progressions of length 3.

Table of values

n a(n)
0 0
1 1
2 2
3 4
4 7
5 11
6 17
7 26
8 40
9 61
10 92
11 139
12 209
13 314
14 472
15 709
16 1064
17 1597
18 2396
19 3595
20 5393
21 8090
22 12136
23 18205
24 27308
25 40963
26 61445
27 92168
28 138253
29 207380
30 311071
31 466607
32 699911
33 1049867
34 1574801
35 2362202
36 3543304
37 5314957
38 7972436

List of values

[0, 1, 2, 4, 7, 11, 17, 26, 40, 61, 92, 139, 209, 314, 472, 709, 1064, 1597, 2396, 3595, 5393, 8090, 12136, 18205, 27308, 40963, 61445, 92168, 138253, 207380, 311071, 466607, 699911, 1049867, 1574801, 2362202, 3543304, 5314957, 7972436]

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

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