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 | 4 |
3 | -21 |
4 | 136 |
5 | -1045 |
6 | 9276 |
7 | -93289 |
8 | 1047376 |
9 | -12975561 |
10 | 175721140 |
11 | -2581284541 |
12 | 40864292184 |
13 | -693347907421 |
14 | 12548540320876 |
15 | -241253367679185 |
16 | 4909234733857696 |
17 | -105394372192969489 |
18 | 2380337795595885156 |