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 | 544 |
| 2 | 38114 |
| 3 | 808384 |
| 4 | 7213984 |
| 5 | 37569728 |
| 6 | 149405248 |
| 7 | 470966912 |
| 8 | 1291650786 |
| 9 | 3101265120 |
| 10 | 6883061184 |
| 11 | 13967503552 |
| 12 | 27036220096 |
| 13 | 48877735232 |
| 14 | 85898222336 |
| 15 | 142979339392 |
| 16 | 233808578464 |
| 17 | 365627715968 |
| 18 | 565633846434 |
| 19 | 841764350272 |
| 20 | 1246798917056 |
| 21 | 1783384909696 |
| 22 | 2547362852288 |