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 | 5 |
| 2 | 8 |
| 3 | 221 |
| 4 | 1517 |
| 5 | 7565 |
| 6 | 2600 |
| 7 | 71285 |
| 8 | 257045 |
| 9 | 84680 |
| 10 | 488597 |
| 11 | 1687397 |
| 12 | 837224 |
| 13 | 8732021 |
| 14 | 15800621 |
| 15 | 22953677 |
| 16 | 75533477 |
| 17 | 157326845 |
| 18 | 296631725 |
| 19 | 94070600 |
| 20 | 514518485 |
| 21 | 741527357 |
| 22 | 269583560 |
| 23 | 1945074605 |
| 24 | 7391012837 |
| 25 | 10076746685 |
| 26 | 3192137000 |
| 27 | 16843627085 |
| 28 | 24001135925 |
| 29 | 8707689224 |