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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.

A132728 Triangle T(n, k) = 4 - 3*(-1)^k, read by rows.

Table of values

n a(n)
0 1
1 1
2 7
3 1
4 7
5 1
6 1
7 7
8 1
9 7
10 1
11 7
12 1
13 7
14 1
15 1
16 7
17 1
18 7
19 1
20 7
21 1
22 7
23 1
24 7
25 1
26 7
27 1
28 1
29 7
30 1
31 7
32 1
33 7
34 1
35 7
36 1
37 7
38 1
39 7
40 1
41 7
42 1
43 7
44 1
45 1
46 7
47 1
48 7
49 1
50 7
51 1
52 7
53 1
54 7
55 1
56 7
57 1
58 7
59 1
60 7
61 1
62 7
63 1
64 7
65 1

List of values

[1, 1, 7, 1, 7, 1, 1, 7, 1, 7, 1, 7, 1, 7, 1, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1]

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