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 | 70 |
| 2 | 7827 |
| 3 | 208072 |
| 4 | 2322599 |
| 5 | 16537086 |
| 6 | 84059234 |
| 7 | 342943680 |
| 8 | 1169405354 |
| 9 | 3500184570 |
| 10 | 9372540629 |
| 11 | 23022951048 |
| 12 | 52423261153 |
| 13 | 112270651514 |
| 14 | 227577256564 |
| 15 | 440658095360 |
| 16 | 818409534692 |
| 17 | 1466948929086 |
| 18 | 2544850623111 |
| 19 | 4291394833480 |