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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.

A155742 Triangle T(n, k) = (-1)^n*StirlingS1(n, k)*StirlingS1(n, n-k), read by rows.

Table of values

n a(n)
0 1
1 0
2 0
3 0
4 1
5 0
6 0
7 6
8 6
9 0
10 0
11 36
12 121
13 36
14 0
15 0
16 240
17 1750
18 1750
19 240
20 0
21 0
22 1800
23 23290
24 50625
25 23290
26 1800
27 0
28 0
29 15120
30 308700
31 1193640
32 1193640
33 308700
34 15120
35 0
36 0
37 141120
38 4207896
39 25738720
40 45819361
41 25738720
42 4207896
43 141120
44 0
45 0
46 1451520
47 59832864
48 535810464
49 1510458516
50 1510458516
51 535810464
52 59832864
53 1451520
54 0

List of values

[1, 0, 0, 0, 1, 0, 0, 6, 6, 0, 0, 36, 121, 36, 0, 0, 240, 1750, 1750, 240, 0, 0, 1800, 23290, 50625, 23290, 1800, 0, 0, 15120, 308700, 1193640, 1193640, 308700, 15120, 0, 0, 141120, 4207896, 25738720, 45819361, 25738720, 4207896, 141120, 0, 0, 1451520, 59832864, 535810464, 1510458516, 1510458516, 535810464, 59832864, 1451520, 0]

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