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 | 10 |
| 3 | -1 |
| 4 | 100 |
| 5 | -20 |
| 6 | 1 |
| 7 | 1000 |
| 8 | -300 |
| 9 | 30 |
| 10 | -1 |
| 11 | 10000 |
| 12 | -4000 |
| 13 | 600 |
| 14 | -40 |
| 15 | 1 |
| 16 | 100000 |
| 17 | -50000 |
| 18 | 10000 |
| 19 | -1000 |
| 20 | 50 |
| 21 | -1 |
| 22 | 1000000 |
| 23 | -600000 |
| 24 | 150000 |
| 25 | -20000 |
| 26 | 1500 |
| 27 | -60 |
| 28 | 1 |
| 29 | 10000000 |
| 30 | -7000000 |
| 31 | 2100000 |
| 32 | -350000 |
| 33 | 35000 |
| 34 | -2100 |
| 35 | 70 |