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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.

A195662 Triangle T(n,k) read by rows: T(0,0)= -3, T(1,0)= 2, T(1,1) = 0 and T(n,k) = T(n-1,k) -T(n-2,k-2) otherwise.

Table of values

n a(n)
0 -3
1 2
2 0
3 2
4 0
5 3
6 2
7 0
8 1
9 0
10 2
11 0
12 -1
13 0
14 -3
15 2
16 0
17 -3
18 0
19 -4
20 0
21 2
22 0
23 -5
24 0
25 -3
26 0
27 3
28 2
29 0
30 -7
31 0
32 0
33 0
34 7
35 0
36 2
37 0
38 -9
39 0
40 5
41 0
42 10
43 0
44 -3
45 2
46 0
47 -11
48 0
49 12
50 0
51 10
52 0
53 -10
54 0
55 2
56 0
57 -13
58 0
59 21
60 0
61 5
62 0
63 -20
64 0
65 3
66 2
67 0
68 -15
69 0
70 32
71 0
72 -7
73 0
74 -30
75 0
76 13
77 0

List of values

[-3, 2, 0, 2, 0, 3, 2, 0, 1, 0, 2, 0, -1, 0, -3, 2, 0, -3, 0, -4, 0, 2, 0, -5, 0, -3, 0, 3, 2, 0, -7, 0, 0, 0, 7, 0, 2, 0, -9, 0, 5, 0, 10, 0, -3, 2, 0, -11, 0, 12, 0, 10, 0, -10, 0, 2, 0, -13, 0, 21, 0, 5, 0, -20, 0, 3, 2, 0, -15, 0, 32, 0, -7, 0, -30, 0, 13, 0]

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