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 | 93 |
| 2 | 454 |
| 3 | 538 |
| 4 | 993 |
| 5 | 7664 |
| 6 | 9993 |
| 7 | 72720 |
| 8 | 99993 |
| 9 | 356428 |
| 10 | 643564 |
| 11 | 999993 |
| 12 | 9090909 |
| 13 | 9999993 |
| 14 | 35294117 |
| 15 | 64705875 |
| 16 | 99999993 |
| 17 | 335664328 |
| 18 | 664335664 |
| 19 | 684210519 |
| 20 | 818181818 |
| 21 | 838056673 |
| 22 | 846153846 |
| 23 | 866028701 |
| 24 | 980125138 |
| 25 | 999999993 |