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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.

A278401 G.f.: Re(2/(i; x)_inf), where (a; q)_inf is the q-Pochhammer symbol, i = sqrt(-1).

Table of values

n a(n)
0 1
1 -1
2 -2
3 -1
4 -1
5 -1
6 -1
7 1
8 2
9 2
10 2
11 4
12 5
13 5
14 5
15 6
16 7
17 5
18 3
19 4
20 3
21 0
22 -2
23 -3
24 -5
25 -10
26 -14
27 -16
28 -18
29 -23
30 -28
31 -28
32 -29
33 -35
34 -38
35 -37
36 -37
37 -39
38 -39
39 -35
40 -30
41 -29
42 -26
43 -15
44 -5
45 0
46 10
47 26
48 41
49 51
50 64
51 85
52 105
53 119
54 135
55 160
56 183
57 196
58 212
59 236
60 255
61 265

List of values

[1, -1, -2, -1, -1, -1, -1, 1, 2, 2, 2, 4, 5, 5, 5, 6, 7, 5, 3, 4, 3, 0, -2, -3, -5, -10, -14, -16, -18, -23, -28, -28, -29, -35, -38, -37, -37, -39, -39, -35, -30, -29, -26, -15, -5, 0, 10, 26, 41, 51, 64, 85, 105, 119, 135, 160, 183, 196, 212, 236, 255, 265]

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