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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.

A321915 Tetrangle where T(n,H(u),H(v)) is the coefficient of h(v) in m(u), where u and v are integer partitions of n, H is Heinz number, m is monomial symmetric functions, and h is homogeneous symmetric functions.

Table of values

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

List of values

[1, 2, -1, -1, 1, 3, -3, 1, -3, 5, -2, 1, -2, 1, 4, -2, -4, 4, -1, -2, 3, 2, -4, 1, -4, 2, 7, -7, 2, 4, -4, -7, 10, -3, -1, 1, 2, -3, 1, 5, -5, -5, 5, 5, -5, 1, -5, 9, 5, -7, -9, 9, -2, -5, 5, 11, -11, -8, 10, -2, 5, -7, -11, 14, 10, -14, 3, 5, -9, -8, 10, 12]