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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.

A321914 Tetrangle where T(n,H(u),H(v)) is the coefficient of e(v) in m(u), where u and v are integer partitions of n, H is Heinz number, m is monomial symmetric functions, and e is elementary symmetric functions.

Table of values

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

List of values

[1, -2, 1, 1, 0, 3, -3, 1, -3, 1, 0, 1, 0, 0, -4, 2, 4, -4, 1, 2, 1, -2, 0, 0, 4, -2, -1, 1, 0, -4, 0, 1, 0, 0, 1, 0, 0, 0, 0, 5, -5, -5, 5, 5, -5, 1, -5, 1, 5, -3, -1, 1, 0, -5, 5, -1, 1, -2, 0, 0, 5, -3, 1, 0, 0, 0, 0, 5, -1, -2, 0, 1, 0, 0, -5, 1, 0, 0, 0, 0]