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.

A099087 Expansion of 1/(1 - 2*x + 2*x^2).

Table of values

n a(n)
0 1
1 2
2 2
3 0
4 -4
5 -8
6 -8
7 0
8 16
9 32
10 32
11 0
12 -64
13 -128
14 -128
15 0
16 256
17 512
18 512
19 0
20 -1024
21 -2048
22 -2048
23 0
24 4096
25 8192
26 8192
27 0
28 -16384
29 -32768
30 -32768
31 0
32 65536
33 131072
34 131072
35 0
36 -262144
37 -524288
38 -524288
39 0
40 1048576
41 2097152
42 2097152
43 0
44 -4194304
45 -8388608
46 -8388608
47 0
48 16777216

List of values

[1, 2, 2, 0, -4, -8, -8, 0, 16, 32, 32, 0, -64, -128, -128, 0, 256, 512, 512, 0, -1024, -2048, -2048, 0, 4096, 8192, 8192, 0, -16384, -32768, -32768, 0, 65536, 131072, 131072, 0, -262144, -524288, -524288, 0, 1048576, 2097152, 2097152, 0, -4194304, -8388608, -8388608, 0, 16777216]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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