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.

A052994 Expansion of 2x(1-x)/(1-2x-x^2+x^3).

Table of values

n a(n)
0 0
1 2
2 2
3 6
4 12
5 28
6 62
7 140
8 314
9 706
10 1586
11 3564
12 8008
13 17994
14 40432
15 90850
16 204138
17 458694
18 1030676
19 2315908
20 5203798
21 11692828
22 26273546
23 59036122
24 132652962
25 298068500
26 669753840
27 1504923218
28 3381531776
29 7598232930
30 17073074418

List of values

[0, 2, 2, 6, 12, 28, 62, 140, 314, 706, 1586, 3564, 8008, 17994, 40432, 90850, 204138, 458694, 1030676, 2315908, 5203798, 11692828, 26273546, 59036122, 132652962, 298068500, 669753840, 1504923218, 3381531776, 7598232930, 17073074418]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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