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 | 9 |
| 2 | 23 |
| 3 | 85 |
| 4 | 88 |
| 5 | 208 |
| 6 | 953 |
| 7 | 12339 |
| 8 | 122420 |
| 9 | 251925 |
| 10 | 286400 |
| 11 | 467608 |
| 12 | 1207360 |
| 13 | 1308519 |
| 14 | 1537214 |
| 15 | 1638373 |
| 16 | 1844108 |
| 17 | 2314739 |
| 18 | 2736742 |
| 19 | 9331102 |
| 20 | 11692851 |
| 21 | 28349534 |
| 22 | 85403569 |