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.

A106568 Expansion of 4*x/(1 - 4*x - 4*x^2).

Table of values

n a(n)
0 0
1 4
2 16
3 80
4 384
5 1856
6 8960
7 43264
8 208896
9 1008640
10 4870144
11 23515136
12 113541120
13 548225024
14 2647064576
15 12781158400
16 61712891904
17 297976201216
18 1438756372480
19 6946930294784
20 33542746669056
21 161958707855360
22 782005818097664
23 3775858103812096
24 18231455687639040

List of values

[0, 4, 16, 80, 384, 1856, 8960, 43264, 208896, 1008640, 4870144, 23515136, 113541120, 548225024, 2647064576, 12781158400, 61712891904, 297976201216, 1438756372480, 6946930294784, 33542746669056, 161958707855360, 782005818097664, 3775858103812096, 18231455687639040]