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.

A168057 Expansion of (1+8x^2+8x^3)/((1-2x)^2*(1+2x+4x^2)).

Table of values

n a(n)
0 1
1 2
2 12
3 40
4 80
5 224
6 576
7 1152
8 2816
9 6656
10 13312
11 30720
12 69632
13 139264
14 311296
15 688128
16 1376256
17 3014656
18 6553600
19 13107200
20 28311552
21 60817408
22 121634816
23 260046848
24 553648128
25 1107296256
26 2348810240
27 4966055936
28 9932111872

List of values

[1, 2, 12, 40, 80, 224, 576, 1152, 2816, 6656, 13312, 30720, 69632, 139264, 311296, 688128, 1376256, 3014656, 6553600, 13107200, 28311552, 60817408, 121634816, 260046848, 553648128, 1107296256, 2348810240, 4966055936, 9932111872]