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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.

A057566 Number of collinear triples in a 3 X n rectangular grid.

Table of values

n a(n)
0 0
1 1
2 2
3 8
4 20
5 43
6 78
7 130
8 200
9 293
10 410
11 556
12 732
13 943
14 1190
15 1478
16 1808
17 2185
18 2610
19 3088
20 3620
21 4211
22 4862
23 5578
24 6360
25 7213
26 8138
27 9140
28 10220
29 11383
30 12630
31 13966
32 15392
33 16913
34 18530
35 20248
36 22068
37 23995
38 26030
39 28178
40 30440
41 32821
42 35322

List of values

[0, 1, 2, 8, 20, 43, 78, 130, 200, 293, 410, 556, 732, 943, 1190, 1478, 1808, 2185, 2610, 3088, 3620, 4211, 4862, 5578, 6360, 7213, 8138, 9140, 10220, 11383, 12630, 13966, 15392, 16913, 18530, 20248, 22068, 23995, 26030, 28178, 30440, 32821, 35322]

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

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