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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.

A122960 Triangle T(n,k), 0 <= k <= n, read by rows given by [0, 1, -1, -1, 1, 0, 0, 0, 0, 0, 0, ...] DELTA [1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, ...] where DELTA is the operator defined in A084938.

Table of values

n a(n)
0 1
1 0
2 1
3 0
4 1
5 1
6 0
7 0
8 3
9 1
10 0
11 1
12 0
13 6
14 1
15 0
16 0
17 5
18 0
19 10
20 1
21 0
22 1
23 0
24 15
25 0
26 15
27 1
28 0
29 0
30 7
31 0
32 35
33 0
34 21
35 1
36 0
37 1
38 0
39 28
40 0
41 70
42 0
43 28
44 1
45 0
46 0
47 9
48 0
49 84
50 0
51 126
52 0
53 36
54 1
55 0
56 1
57 0
58 45
59 0
60 210
61 0
62 210
63 0
64 45
65 1

List of values

[1, 0, 1, 0, 1, 1, 0, 0, 3, 1, 0, 1, 0, 6, 1, 0, 0, 5, 0, 10, 1, 0, 1, 0, 15, 0, 15, 1, 0, 0, 7, 0, 35, 0, 21, 1, 0, 1, 0, 28, 0, 70, 0, 28, 1, 0, 0, 9, 0, 84, 0, 126, 0, 36, 1, 0, 1, 0, 45, 0, 210, 0, 210, 0, 45, 1]

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