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 | 8 |
| 2 | 283 |
| 3 | 5070 |
| 4 | 73669 |
| 5 | 966751 |
| 6 | 11970035 |
| 7 | 142725365 |
| 8 | 1657511569 |
| 9 | 18877697635 |
| 10 | 211802823221 |
| 11 | 2348286736298 |
| 12 | 25785452449087 |
| 13 | 280880375389758 |
| 14 | 3039062263181055 |
| 15 | 32693207724724247 |
| 16 | 349957928177109417 |
| 17 | 3729837791070240369 |
| 18 | 39600963003695964401 |
| 19 | 419035480966899467509 |