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 | 9 |
| 2 | 199 |
| 3 | 1672 |
| 4 | 18117 |
| 5 | 184115 |
| 6 | 1774344 |
| 7 | 17764558 |
| 8 | 178471267 |
| 9 | 1771400531 |
| 10 | 17642252587 |
| 11 | 176152966672 |
| 12 | 1755746806600 |
| 13 | 17498252087398 |
| 14 | 174492908718136 |
| 15 | 1739802753524141 |
| 16 | 17345014184699169 |
| 17 | 172936211392283816 |