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 | 0 |
| 4 | 6 |
| 5 | 62 |
| 6 | 362 |
| 7 | 1266 |
| 8 | 3692 |
| 9 | 8904 |
| 10 | 19376 |
| 11 | 38144 |
| 12 | 70574 |
| 13 | 122478 |
| 14 | 203722 |
| 15 | 324554 |
| 16 | 500868 |
| 17 | 749128 |
| 18 | 1094204 |
| 19 | 1560240 |
| 20 | 2183562 |
| 21 | 2998598 |
| 22 | 4055502 |
| 23 | 5402450 |
| 24 | 7107528 |
| 25 | 9233488 |
| 26 | 11870016 |
| 27 | 15100040 |
| 28 | 19037586 |
| 29 | 23787678 |
| 30 | 29495558 |
| 31 | 36290898 |
| 32 | 44354248 |
| 33 | 53846392 |
| 34 | 64985376 |