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) |
|---|---|
| 0 | 1 |
| 1 | 9 |
| 2 | 90 |
| 3 | 891 |
| 4 | 8829 |
| 5 | 87480 |
| 6 | 866781 |
| 7 | 8588349 |
| 8 | 85096170 |
| 9 | 843160671 |
| 10 | 8354311569 |
| 11 | 82777250160 |
| 12 | 820184055561 |
| 13 | 8126651751489 |
| 14 | 80521522263450 |
| 15 | 797833566134451 |
| 16 | 7905195795581109 |
| 17 | 78327264255440040 |
| 18 | 776092140459190341 |
| 19 | 7689774642431673429 |
| 20 | 76192801046017773930 |