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 | 2 |
| 3 | 3 |
| 4 | 6 |
| 5 | 9 |
| 6 | 18 |
| 7 | 27 |
| 8 | 54 |
| 9 | 81 |
| 10 | 102 |
| 11 | 126 |
| 12 | 162 |
| 13 | 189 |
| 14 | 243 |
| 15 | 369 |
| 16 | 486 |
| 17 | 567 |
| 18 | 729 |
| 19 | 1071 |
| 20 | 1134 |
| 21 | 1323 |
| 22 | 1458 |
| 23 | 1462 |
| 24 | 1539 |
| 25 | 2187 |
| 26 | 2538 |
| 27 | 2889 |
| 28 | 3213 |
| 29 | 4374 |
| 30 | 4617 |
| 31 | 6561 |
| 32 | 7749 |
| 33 | 8262 |
| 34 | 8667 |
| 35 | 13122 |
| 36 | 14238 |
| 37 | 15498 |
| 38 | 19683 |
| 39 | 24786 |
| 40 | 27702 |
| 41 | 28994 |
| 42 | 32319 |
| 43 | 34263 |
| 44 | 39366 |
| 45 | 40838 |