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 | 220 |
| 2 | 1184 |
| 3 | 6232 |
| 4 | 10744 |
| 5 | 12285 |
| 6 | 67095 |
| 7 | 69615 |
| 8 | 522405 |
| 9 | 1175265 |
| 10 | 1798875 |
| 11 | 4482765 |
| 12 | 5730615 |
| 13 | 9773505 |
| 14 | 10634085 |
| 15 | 34765731 |
| 16 | 203972715 |
| 17 | 211319745 |
| 18 | 558410475 |
| 19 | 1131258975 |
| 20 | 2221700481 |
| 21 | 3900906009 |
| 22 | 4416880923 |
| 23 | 9357224877 |
| 24 | 36853129467 |
| 25 | 139043711025 |
| 26 | 200453238531 |
| 27 | 200795248485 |