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) |
|---|---|
| 0 | 1 |
| 1 | 364 |
| 2 | 16044 |
| 3 | 200928 |
| 4 | 1089452 |
| 5 | 4196920 |
| 6 | 12547808 |
| 7 | 31553344 |
| 8 | 70439852 |
| 9 | 142487436 |
| 10 | 268594872 |
| 11 | 476105504 |
| 12 | 800698080 |
| 13 | 1296257144 |
| 14 | 2022013760 |
| 15 | 3056208064 |
| 16 | 4507001772 |
| 17 | 6481076056 |
| 18 | 9123064524 |
| 19 | 12637846368 |
| 20 | 17190762680 |
| 21 | 22999441920 |
| 22 | 30453867808 |
| 23 | 39772497856 |
| 24 | 51254988512 |