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 | 285 |
| 2 | 11518 |
| 3 | 172980 |
| 4 | 1460409 |
| 5 | 8476317 |
| 6 | 37822419 |
| 7 | 138925925 |
| 8 | 439298830 |
| 9 | 1233421948 |
| 10 | 3144133223 |
| 11 | 7397932763 |
| 12 | 16271365032 |
| 13 | 33784971650 |
| 14 | 66744596242 |
| 15 | 126257435694 |
| 16 | 229882539967 |
| 17 | 404612835239 |
| 18 | 690928552540 |
| 19 | 1148210556166 |