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 | 20 |
| 2 | 680 |
| 3 | 29260 |
| 4 | 34220 |
| 5 | 70300 |
| 6 | 221815 |
| 7 | 227920 |
| 8 | 287980 |
| 9 | 467180 |
| 10 | 908600 |
| 11 | 2481115 |
| 12 | 4278680 |
| 13 | 12259940 |
| 14 | 13813570 |
| 15 | 15493204 |
| 16 | 17861900 |
| 17 | 19970444 |
| 18 | 24672560 |
| 19 | 25665020 |
| 20 | 27880600 |
| 21 | 29742164 |
| 22 | 34055980 |
| 23 | 44722580 |