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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.

A244138 Triangle read by rows: coefficients T(n,k) of a binomial decomposition of n*(n-1) as Sum(k=0..n)T(n,k)*binomial(n,k).

Table of values

n a(n)
0 0
1 0
2 0
3 0
4 0
5 2
6 0
7 0
8 4
9 -6
10 0
11 0
12 8
13 -18
14 36
15 0
16 0
17 16
18 -54
19 144
20 -320
21 0
22 0
23 32
24 -162
25 576
26 -1600
27 3750
28 0
29 0
30 64
31 -486
32 2304
33 -8000
34 22500
35 -54432
36 0
37 0
38 128
39 -1458
40 9216
41 -40000
42 135000
43 -381024
44 941192
45 0
46 0
47 256
48 -4374
49 36864
50 -200000
51 810000
52 -2667168
53 7529536
54 -18874368

List of values

[0, 0, 0, 0, 0, 2, 0, 0, 4, -6, 0, 0, 8, -18, 36, 0, 0, 16, -54, 144, -320, 0, 0, 32, -162, 576, -1600, 3750, 0, 0, 64, -486, 2304, -8000, 22500, -54432, 0, 0, 128, -1458, 9216, -40000, 135000, -381024, 941192, 0, 0, 256, -4374, 36864, -200000, 810000, -2667168, 7529536, -18874368]