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 | 6 |
| 2 | 18 |
| 3 | 42 |
| 4 | 162 |
| 5 | 486 |
| 6 | 1458 |
| 7 | 4422 |
| 8 | 6162 |
| 9 | 14406 |
| 10 | 19182 |
| 11 | 22650 |
| 12 | 26406 |
| 13 | 39366 |
| 14 | 77658 |
| 15 | 143262 |
| 16 | 412806 |
| 17 | 527802 |
| 18 | 564898 |
| 19 | 843642 |
| 20 | 981090 |
| 21 | 1514130 |
| 22 | 2023506 |
| 23 | 2453922 |
| 24 | 3050262 |
| 25 | 3946182 |
| 26 | 4042110 |
| 27 | 4590306 |
| 28 | 5010882 |
| 29 | 6931390 |
| 30 | 7003962 |
| 31 | 7067622 |
| 32 | 7195806 |
| 33 | 7455630 |
| 34 | 9349410 |
| 35 | 10696170 |
| 36 | 11092230 |