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 | 0 |
| 2 | 0 |
| 3 | 3 |
| 4 | 21 |
| 5 | 78 |
| 6 | 216 |
| 7 | 498 |
| 8 | 1014 |
| 9 | 1884 |
| 10 | 3264 |
| 11 | 5349 |
| 12 | 8379 |
| 13 | 12642 |
| 14 | 18480 |
| 15 | 26292 |
| 16 | 36540 |
| 17 | 49752 |
| 18 | 66528 |
| 19 | 87543 |
| 20 | 113553 |
| 21 | 145398 |
| 22 | 184008 |
| 23 | 230406 |
| 24 | 285714 |
| 25 | 351156 |
| 26 | 428064 |
| 27 | 517881 |
| 28 | 622167 |
| 29 | 742602 |
| 30 | 880992 |
| 31 | 1039272 |
| 32 | 1219512 |
| 33 | 1423920 |
| 34 | 1654848 |
| 35 | 1914795 |
| 36 | 2206413 |
| 37 | 2532510 |
| 38 | 2896056 |