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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.

A321916 Tetrangle where T(n,H(u),H(v)) is the coefficient of e(v) in h(u), where u and v are integer partitions of n, H is Heinz number, e is elementary symmetric functions, and h is homogeneous symmetric functions.

Table of values

n a(n)
1 1
2 -1
3 1
4 0
5 1
6 1
7 -2
8 1
9 0
10 -1
11 1
12 0
13 0
14 1
15 -1
16 1
17 2
18 -3
19 1
20 0
21 1
22 0
23 -2
24 1
25 0
26 0
27 1
28 -2
29 1
30 0
31 0
32 0
33 -1
34 1
35 0
36 0
37 0
38 0
39 1
40 1
41 -2
42 -2
43 3
44 3
45 -4
46 1
47 0
48 -1
49 0
50 1
51 2
52 -3
53 1
54 0
55 0
56 -1
57 2
58 1
59 -3
60 1
61 0
62 0
63 0
64 1
65 0
66 -2
67 1
68 0
69 0
70 0
71 0
72 1
73 -2
74 1
75 0
76 0
77 0
78 0
79 0
80 -1
81 1

List of values

[1, -1, 1, 0, 1, 1, -2, 1, 0, -1, 1, 0, 0, 1, -1, 1, 2, -3, 1, 0, 1, 0, -2, 1, 0, 0, 1, -2, 1, 0, 0, 0, -1, 1, 0, 0, 0, 0, 1, 1, -2, -2, 3, 3, -4, 1, 0, -1, 0, 1, 2, -3, 1, 0, 0, -1, 2, 1, -3, 1, 0, 0, 0, 1, 0, -2, 1, 0, 0, 0, 0, 1, -2, 1, 0, 0, 0, 0, 0, -1, 1]