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.

A052528 Expansion of (1 - x)/(1 - 2*x - 2*x^2 + 2*x^3).

Table of values

n a(n)
0 1
1 1
2 4
3 8
4 22
5 52
6 132
7 324
8 808
9 2000
10 4968
11 12320
12 30576
13 75856
14 188224
15 467008
16 1158752
17 2875072
18 7133632
19 17699904
20 43916928
21 108966400
22 270366848
23 670832640
24 1664466176
25 4129863936
26 10246994944
27 25424785408
28 63083832832

List of values

[1, 1, 4, 8, 22, 52, 132, 324, 808, 2000, 4968, 12320, 30576, 75856, 188224, 467008, 1158752, 2875072, 7133632, 17699904, 43916928, 108966400, 270366848, 670832640, 1664466176, 4129863936, 10246994944, 25424785408, 63083832832]