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 | 1 |
| 2 | 18 |
| 3 | 27 |
| 4 | 324 |
| 5 | 45 |
| 6 | 486 |
| 7 | 63 |
| 8 | 5832 |
| 9 | 729 |
| 10 | 810 |
| 11 | 99 |
| 12 | 8748 |
| 13 | 117 |
| 14 | 1134 |
| 15 | 1215 |
| 16 | 104976 |
| 17 | 153 |
| 18 | 13122 |
| 19 | 171 |
| 20 | 14580 |
| 21 | 1701 |
| 22 | 1782 |
| 23 | 207 |
| 24 | 157464 |
| 25 | 2025 |
| 26 | 2106 |
| 27 | 19683 |
| 28 | 20412 |
| 29 | 261 |
| 30 | 21870 |
| 31 | 279 |
| 32 | 1889568 |
| 33 | 2673 |
| 34 | 2754 |
| 35 | 2835 |
| 36 | 236196 |
| 37 | 333 |
| 38 | 3078 |
| 39 | 3159 |
| 40 | 262440 |
| 41 | 369 |
| 42 | 30618 |
| 43 | 387 |