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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.

A278715 Table T read by rows. T(k, h) gives the numerators of the Dedekind sums s(h, k) with gcd(h, k) = 1 or 0 otherwise.

Table of values

n a(n)
2 0
3 1
4 -1
5 1
6 0
7 -1
8 1
9 0
10 0
11 -1
12 5
13 0
14 0
15 0
16 -5
17 5
18 1
19 -1
20 1
21 -1
22 -5
23 7
24 0
25 1
26 0
27 -1
28 0
29 -7
30 14
31 4
32 0
33 -4
34 4
35 0
36 -4
37 -14
38 3
39 0
40 0
41 0
42 0
43 0
44 0
45 0
46 -3
47 15
48 5
49 3
50 3
51 -5
52 5
53 -3
54 -3
55 -5
56 -15
57 55
58 0
59 0
60 0
61 -1
62 0
63 1
64 0
65 0
66 0
67 -55
68 11
69 4
70 1
71 -1
72 0
73 -4
74 4
75 0
76 1
77 -1
78 -4
79 -11
80 13
81 0
82 3
83 0
84 3
85 0
86 0
87 0
88 -3
89 0
90 -3
91 0
92 -13
93 91
94 7
95 0
96 19
97 0
98 0
99 -7
100 7
101 0
102 0
103 -19
104 0
105 -7
106 -91

List of values

[0, 1, -1, 1, 0, -1, 1, 0, 0, -1, 5, 0, 0, 0, -5, 5, 1, -1, 1, -1, -5, 7, 0, 1, 0, -1, 0, -7, 14, 4, 0, -4, 4, 0, -4, -14, 3, 0, 0, 0, 0, 0, 0, 0, -3, 15, 5, 3, 3, -5, 5, -3, -3, -5, -15, 55, 0, 0, 0, -1, 0, 1, 0, 0, 0, -55, 11, 4, 1, -1, 0, -4, 4, 0, 1, -1, -4, -11, 13, 0, 3, 0, 3, 0, 0, 0, -3, 0, -3, 0, -13, 91, 7, 0, 19, 0, 0, -7, 7, 0, 0, -19, 0, -7, -91]