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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.

A127627 Triangle T(n,k) = A054525(n,k)*A018804(k), read by rows 1<=k<=n.

Table of values

n a(n)
1 1
2 -1
3 3
4 -1
5 0
6 5
7 0
8 -3
9 0
10 8
11 -1
12 0
13 0
14 0
15 9
16 1
17 -3
18 -5
19 0
20 0
21 15
22 -1
23 0
24 0
25 0
26 0
27 0
28 13
29 0
30 0
31 0
32 -8
33 0
34 0
35 0
36 20
37 0
38 0
39 -5
40 0
41 0
42 0
43 0
44 0
45 21
46 1
47 -3
48 0
49 0
50 -9
51 0
52 0
53 0
54 0
55 27
56 -1
57 0
58 0
59 0
60 0
61 0
62 0
63 0
64 0
65 0
66 21
67 0
68 3
69 0
70 -8
71 0
72 -15
73 0
74 0
75 0
76 0
77 0
78 40

List of values

[1, -1, 3, -1, 0, 5, 0, -3, 0, 8, -1, 0, 0, 0, 9, 1, -3, -5, 0, 0, 15, -1, 0, 0, 0, 0, 0, 13, 0, 0, 0, -8, 0, 0, 0, 20, 0, 0, -5, 0, 0, 0, 0, 0, 21, 1, -3, 0, 0, -9, 0, 0, 0, 0, 27, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 21, 0, 3, 0, -8, 0, -15, 0, 0, 0, 0, 0, 40]

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