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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.

A354272 Irregular triangle read by rows: coefficients of polynomials which are the product of all possible monic Littlewood polynomials of degree n.

Table of values

n a(n)
0 1
1 -1
2 0
3 1
4 1
5 0
6 -2
7 0
8 -1
9 0
10 -2
11 0
12 1
13 1
14 0
15 -4
16 0
17 2
18 0
19 -4
20 0
21 15
22 0
23 8
24 0
25 -36
26 0
27 8
28 0
29 15
30 0
31 -4
32 0
33 2
34 0
35 -4
36 0
37 1
38 1
39 0
40 -8
41 0
42 20
43 0
44 -24
45 0
46 58
47 0
48 -80
49 0
50 -92
51 0
52 120
53 0
54 147
55 0
56 384
57 0
58 -2108
59 0
60 880
61 0
62 3940
63 0
64 -3096
65 0
66 2288
67 0
68 -2136
69 0
70 -1803
71 0
72 -2136
73 0
74 2288
75 0
76 -3096
77 0
78 3940
79 0
80 880
81 0
82 -2108
83 0
84 384
85 0
86 147
87 0
88 120
89 0
90 -92
91 0
92 -80
93 0
94 58
95 0
96 -24
97 0
98 20
99 0
100 -8
101 0
102 1

List of values

[1, -1, 0, 1, 1, 0, -2, 0, -1, 0, -2, 0, 1, 1, 0, -4, 0, 2, 0, -4, 0, 15, 0, 8, 0, -36, 0, 8, 0, 15, 0, -4, 0, 2, 0, -4, 0, 1, 1, 0, -8, 0, 20, 0, -24, 0, 58, 0, -80, 0, -92, 0, 120, 0, 147, 0, 384, 0, -2108, 0, 880, 0, 3940, 0, -3096, 0, 2288, 0, -2136, 0, -1803, 0, -2136, 0, 2288, 0, -3096, 0, 3940, 0, 880, 0, -2108, 0, 384, 0, 147, 0, 120, 0, -92, 0, -80, 0, 58, 0, -24, 0, 20, 0, -8, 0, 1]