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 | 1 |
| 2 | 21 |
| 3 | 63 |
| 4 | 502 |
| 5 | 4435 |
| 6 | 5229 |
| 7 | 5637 |
| 8 | 6822 |
| 9 | 8022 |
| 10 | 35683 |
| 11 | 98802 |
| 12 | 176481 |
| 13 | 210526 |
| 14 | 421052 |
| 15 | 442881 |
| 16 | 480249 |
| 17 | 529443 |
| 18 | 544435 |
| 19 | 640170 |
| 20 | 842104 |
| 21 | 920262 |
| 22 | 976482 |
| 23 | 7390422 |
| 24 | 21251221 |
| 25 | 28934019 |
| 26 | 36174255 |
| 27 | 36563587 |
| 28 | 51804709 |
| 29 | 59963997 |
| 30 | 60550457 |