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 | 18 |
| 2 | 27 |
| 3 | 36 |
| 4 | 45 |
| 5 | 54 |
| 6 | 63 |
| 7 | 72 |
| 8 | 81 |
| 9 | 90 |
| 10 | 1098 |
| 11 | 1188 |
| 12 | 1278 |
| 13 | 1368 |
| 14 | 1458 |
| 15 | 1548 |
| 16 | 1638 |
| 17 | 1728 |
| 18 | 1818 |
| 19 | 1908 |
| 20 | 2097 |
| 21 | 2187 |
| 22 | 2277 |
| 23 | 2367 |
| 24 | 2457 |
| 25 | 2547 |
| 26 | 2637 |
| 27 | 2727 |
| 28 | 2817 |
| 29 | 2907 |
| 30 | 3096 |
| 31 | 3186 |
| 32 | 3276 |
| 33 | 3366 |
| 34 | 3456 |
| 35 | 3546 |
| 36 | 3636 |
| 37 | 3726 |
| 38 | 3816 |
| 39 | 3906 |
| 40 | 4095 |
| 41 | 4185 |
| 42 | 4275 |
| 43 | 4365 |
| 44 | 4455 |
| 45 | 4545 |
| 46 | 4635 |
| 47 | 4725 |