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 | 5 |
| 2 | 17 |
| 3 | 47 |
| 4 | 97 |
| 5 | 98 |
| 6 | 159 |
| 7 | 279 |
| 8 | 359 |
| 9 | 485 |
| 10 | 489 |
| 11 | 749 |
| 12 | 879 |
| 13 | 1679 |
| 14 | 1979 |
| 15 | 2399 |
| 16 | 2499 |
| 17 | 3968 |
| 18 | 5669 |
| 19 | 6749 |
| 20 | 7199 |
| 21 | 7799 |
| 22 | 8099 |
| 23 | 8639 |
| 24 | 9719 |
| 25 | 12799 |
| 26 | 19199 |
| 27 | 25599 |
| 28 | 31999 |
| 29 | 37499 |
| 30 | 39599 |
| 31 | 44799 |
| 32 | 68599 |
| 33 | 78399 |
| 34 | 78749 |
| 35 | 79379 |
| 36 | 94499 |
| 37 | 134999 |
| 38 | 143999 |
| 39 | 146999 |
| 40 | 161999 |
| 41 | 172799 |
| 42 | 175999 |
| 43 | 194399 |
| 44 | 199679 |
| 45 | 209999 |
| 46 | 218699 |
| 47 | 259999 |