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) |
|---|---|
| 1 | 1 |
| 2 | -7 |
| 3 | 1 |
| 4 | 98 |
| 5 | -21 |
| 6 | 1 |
| 7 | -2058 |
| 8 | 539 |
| 9 | -42 |
| 10 | 1 |
| 11 | 57624 |
| 12 | -17150 |
| 13 | 1715 |
| 14 | -70 |
| 15 | 1 |
| 16 | -2016840 |
| 17 | 657874 |
| 18 | -77175 |
| 19 | 4165 |
| 20 | -105 |
| 21 | 1 |
| 22 | 84707280 |
| 23 | -29647548 |
| 24 | 3899224 |
| 25 | -252105 |
| 26 | 8575 |
| 27 | -147 |
| 28 | 1 |
| 29 | -4150656720 |
| 30 | 1537437132 |
| 31 | -220709524 |
| 32 | 16252369 |
| 33 | -672280 |
| 34 | 15778 |
| 35 | -196 |
| 36 | 1 |