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 | 79 |
| 2 | 479 |
| 3 | 2879 |
| 4 | 4895 |
| 5 | 26879 |
| 6 | 79999 |
| 7 | 644735 |
| 8 | 799999 |
| 9 | 2395488 |
| 10 | 6399839 |
| 11 | 8598719 |
| 12 | 63652895 |
| 13 | 144726608 |
| 14 | 799999999 |
| 15 | 935546879 |
| 16 | 12640160863 |
| 17 | 15282380799 |
| 18 | 43687707904 |
| 19 | 79999999999 |