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 | -1 |
2 | 1 |
3 | -7 |
4 | 49 |
5 | -181 |
6 | 1561 |
7 | -18691 |
8 | 173377 |
9 | -2150569 |
10 | 28355761 |
11 | -356432671 |
12 | 5780298481 |
13 | -95621235997 |
14 | 1506345546889 |
15 | -29605056916891 |
16 | 624987953076481 |
17 | -12495650070557521 |
18 | 277892162543608417 |
19 | -6701525504691986359 |
20 | 160540685175500028721 |