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 | 0 |
| 2 | 1 |
| 3 | 9 |
| 4 | 55 |
| 5 | 99 |
| 6 | 585 |
| 7 | 595 |
| 8 | 838 |
| 9 | 999 |
| 10 | 5995 |
| 11 | 8668 |
| 12 | 9999 |
| 13 | 45954 |
| 14 | 48384 |
| 15 | 55755 |
| 16 | 56665 |
| 17 | 59895 |
| 18 | 59995 |
| 19 | 64846 |
| 20 | 65656 |
| 21 | 77977 |
| 22 | 86968 |
| 23 | 88488 |
| 24 | 89398 |
| 25 | 97479 |
| 26 | 97579 |
| 27 | 99099 |
| 28 | 99199 |
| 29 | 99999 |
| 30 | 158851 |
| 31 | 176671 |
| 32 | 509905 |
| 33 | 549945 |
| 34 | 558855 |
| 35 | 594495 |
| 36 | 599995 |
| 37 | 779977 |