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 | 24 |
| 2 | 157 |
| 3 | 919 |
| 4 | 8265 |
| 5 | 49921 |
| 6 | 382690 |
| 7 | 3076452 |
| 8 | 19781372 |
| 9 | 154994425 |
| 10 | 1144262410 |
| 11 | 7794166168 |
| 12 | 60672207307 |
| 13 | 432430357219 |
| 14 | 3074960725990 |
| 15 | 23390892029200 |
| 16 | 165455143739679 |
| 17 | 1206985642463001 |
| 18 | 8980338421458244 |
| 19 | 63888419650679414 |