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.
n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 9 |
3 | -16 |
4 | 65 |
5 | -160 |
6 | 465 |
7 | -1216 |
8 | 3273 |
9 | -8608 |
10 | 22721 |
11 | -59648 |
12 | 156577 |
13 | -410432 |
14 | 1075529 |
15 | -2817200 |
16 | 7378049 |
17 | -19319840 |
18 | 50586481 |
19 | -132447360 |
20 | 346768521 |
21 | -907878720 |
22 | 2376901249 |
23 | -6222878976 |
24 | 16291823425 |
25 | -42652732800 |
26 | 111666604425 |
27 | -292347451216 |
28 | 765376349633 |
29 | -2003782568608 |