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 | 81 |
| 2 | 8157 |
| 3 | 9801 |
| 4 | 467347 |
| 5 | 532654 |
| 6 | 998001 |
| 7 | 76450589 |
| 8 | 99980001 |
| 9 | 7801738415 |
| 10 | 8593817623 |
| 11 | 9208120793 |
| 12 | 9999800001 |
| 13 | 346667333467 |
| 14 | 401461854015 |
| 15 | 598538145986 |
| 16 | 653332666534 |
| 17 | 945207479453 |
| 18 | 999998000001 |
| 19 | 48349470735060 |