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 | 54 |
| 2 | 828 |
| 3 | 5202 |
| 4 | 20376 |
| 5 | 60030 |
| 6 | 146484 |
| 7 | 312858 |
| 8 | 605232 |
| 9 | 1084806 |
| 10 | 1830060 |
| 11 | 2938914 |
| 12 | 4530888 |
| 13 | 6749262 |
| 14 | 9763236 |
| 15 | 13770090 |
| 16 | 18997344 |
| 17 | 25704918 |
| 18 | 34187292 |
| 19 | 44775666 |
| 20 | 57840120 |
| 21 | 73791774 |
| 22 | 93084948 |