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 | 81162081 |
| 2 | 138791961 |
| 3 | 173369889 |
| 4 | 441882441 |
| 5 | 730458729 |
| 6 | 1091179089 |
| 7 | 1249127649 |
| 8 | 1524043521 |
| 9 | 1560329001 |
| 10 | 1744649361 |
| 11 | 2286465489 |
| 12 | 2606204601 |
| 13 | 3255501249 |
| 14 | 3976941969 |
| 15 | 4770526761 |
| 16 | 5567099769 |
| 17 | 6574128561 |
| 18 | 6800806089 |
| 19 | 7584145569 |