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.

A007910 Expansion of 1/((1-2*x)*(1+x^2)).

Table of values

n a(n)
0 1
1 2
2 3
3 6
4 13
5 26
6 51
7 102
8 205
9 410
10 819
11 1638
12 3277
13 6554
14 13107
15 26214
16 52429
17 104858
18 209715
19 419430
20 838861
21 1677722
22 3355443
23 6710886
24 13421773
25 26843546
26 53687091
27 107374182
28 214748365
29 429496730
30 858993459
31 1717986918
32 3435973837
33 6871947674

List of values

[1, 2, 3, 6, 13, 26, 51, 102, 205, 410, 819, 1638, 3277, 6554, 13107, 26214, 52429, 104858, 209715, 419430, 838861, 1677722, 3355443, 6710886, 13421773, 26843546, 53687091, 107374182, 214748365, 429496730, 858993459, 1717986918, 3435973837, 6871947674]