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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.

A123018 Triangle read by rows: row n gives the coefficients of x^k (0 <= k <= n) in the expansion of Sum_{j=0..n} A320508(n,j)*x^j*(1 - x)^(n - j).

Table of values

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

List of values

[1, 1, -2, 1, -2, 2, 1, -2, 1, -1, 1, -2, 0, 2, 0, 1, -2, -1, 5, -4, 0, 1, -2, -2, 8, -7, 2, 1, 1, -2, -3, 11, -9, 0, 3, -2, 1, -2, -4, 14, -10, -6, 12, -6, 2, 1, -2, -5, 17, -10, -16, 27, -15, 3, -1, 1, -2, -6, 20, -9, -30, 47, -24, 0, 4, 0, 1, -2, -7, 23, -7]