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 | 2 |
| 2 | 3 |
| 3 | 7 |
| 4 | 9 |
| 5 | 104 |
| 6 | 510 |
| 7 | 1413 |
| 8 | 2386 |
| 9 | 40447 |
| 10 | 87110 |
| 11 | 124975 |
| 12 | 1565154 |
| 13 | 1766158 |
| 14 | 2440919 |
| 15 | 2637001 |
| 16 | 9192874 |
| 17 | 24998746 |
| 18 | 73973182 |
| 19 | 88828340 |
| 20 | 432049320 |
| 21 | 470421590 |
| 22 | 477600793 |
| 23 | 3313014448 |
| 24 | 4571423959 |
| 25 | 28839435286 |
| 26 | 40818751774 |