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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.

A244139 Triangle read by rows: terms T(n,k) of a binomial decomposition of n*(n-1) as Sum(k=0..n)T(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 12
9 -6
10 0
11 0
12 48
13 -72
14 36
15 0
16 0
17 160
18 -540
19 720
20 -320
21 0
22 0
23 480
24 -3240
25 8640
26 -9600
27 3750
28 0
29 0
30 1344
31 -17010
32 80640
33 -168000
34 157500
35 -54432
36 0
37 0
38 3584
39 -81648
40 645120
41 -2240000
42 3780000
43 -3048192
44 941192
45 0
46 0
47 9216
48 -367416
49 4644864
50 -25200000
51 68040000
52 -96018048
53 67765824
54 -18874368

List of values

[0, 0, 0, 0, 0, 2, 0, 0, 12, -6, 0, 0, 48, -72, 36, 0, 0, 160, -540, 720, -320, 0, 0, 480, -3240, 8640, -9600, 3750, 0, 0, 1344, -17010, 80640, -168000, 157500, -54432, 0, 0, 3584, -81648, 645120, -2240000, 3780000, -3048192, 941192, 0, 0, 9216, -367416, 4644864, -25200000, 68040000, -96018048, 67765824, -18874368]

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