cp's OEIS Frontend

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.

A269735 G.f.: Sum_{k >= 0} x^(2^k)*(1-x^(2^k))/(1+x^(2^k)).

Table of values

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

List of values

[0, 1, -1, 2, -3, 2, 0, 2, -5, 2, 0, 2, -2, 2, 0, 2, -7, 2, 0, 2, -2, 2, 0, 2, -4, 2, 0, 2, -2, 2, 0, 2, -9, 2, 0, 2, -2, 2, 0, 2, -4, 2, 0, 2, -2, 2, 0, 2, -6, 2, 0, 2, -2, 2, 0, 2, -4, 2, 0, 2, -2, 2, 0, 2, -11, 2, 0, 2, -2, 2, 0, 2, -4, 2, 0, 2, -2, 2, 0, 2, -6, 2, 0, 2, -2, 2, 0, 2, -4, 2, 0, 2, -2]