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 | -7 |
| 2 | 7 |
| 3 | 42 |
| 4 | -56 |
| 5 | -105 |
| 6 | -126 |
| 7 | 489 |
| 8 | 987 |
| 9 | -651 |
| 10 | -833 |
| 11 | -6062 |
| 12 | -3101 |
| 13 | 10381 |
| 14 | 21040 |
| 15 | 34720 |
| 16 | -20692 |
| 17 | -46732 |
| 18 | -173642 |
| 19 | -238014 |
| 20 | 25193 |
| 21 | 614802 |
| 22 | 1161951 |
| 23 | 982667 |
| 24 | 981253 |
| 25 | -3028025 |
| 26 | -5721548 |
| 27 | -10660692 |
| 28 | -7448428 |
| 29 | 4778767 |
| 30 | 21412363 |
| 31 | 79760653 |
| 32 | 64512273 |
| 33 | 37376857 |
| 34 | -64640856 |
| 35 | -220678215 |