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.

A384647 Expansion of (1+3*x+x^2) / (1-x-5*x^2-2*x^3).

Table of values

n a(n)
0 1
1 4
2 10
3 32
4 90
5 270
6 784
7 2314
8 6774
9 19912
10 58410
11 171518
12 503392
13 1477802
14 4337798
15 12733592
16 37378186
17 109721742
18 322079856
19 945444938
20 2775287702
21 8146672104
22 23914000490
23 70197936414
24 206061283072
25 604878966122
26 1775581254310
27 5212098651064

List of values

[1, 4, 10, 32, 90, 270, 784, 2314, 6774, 19912, 58410, 171518, 503392, 1477802, 4337798, 12733592, 37378186, 109721742, 322079856, 945444938, 2775287702, 8146672104, 23914000490, 70197936414, 206061283072, 604878966122, 1775581254310, 5212098651064]