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 | 2 |
| 2 | 3 |
| 3 | 5 |
| 4 | 10 |
| 5 | 15 |
| 6 | 30 |
| 7 | 55 |
| 8 | 105 |
| 9 | 165 |
| 10 | 330 |
| 11 | 660 |
| 12 | 1155 |
| 13 | 2145 |
| 14 | 4290 |
| 15 | 7755 |
| 16 | 15015 |
| 17 | 30030 |
| 18 | 54285 |
| 19 | 100815 |
| 20 | 201630 |
| 21 | 403260 |
| 22 | 705705 |
| 23 | 1411410 |
| 24 | 2822820 |
| 25 | 5645640 |
| 26 | 11392095 |
| 27 | 20465445 |
| 28 | 40930890 |
| 29 | 79744665 |
| 30 | 159489330 |
| 31 | 318978660 |
| 32 | 637957320 |
| 33 | 1321483020 |