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.

A384633 Expansion of (1+x-2*x^2-2*x^3) / (1-6*x^2-4*x^3+2*x^4).

Table of values

n a(n)
0 1
1 1
2 4
3 8
4 26
5 62
6 180
7 460
8 1276
9 3356
10 9136
11 24320
12 65688
13 175752
14 473136
15 1268624
16 3410448
17 9152784
18 24590912
19 66021248
20 177335712
21 476185568
22 1278917440
23 3434413760
24 9223575488
25 24769781184
26 66521273088
27 178644161536
28 479759612288
29 1288410499200

List of values

[1, 1, 4, 8, 26, 62, 180, 460, 1276, 3356, 9136, 24320, 65688, 175752, 473136, 1268624, 3410448, 9152784, 24590912, 66021248, 177335712, 476185568, 1278917440, 3434413760, 9223575488, 24769781184, 66521273088, 178644161536, 479759612288, 1288410499200]