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) |
|---|---|
| 2 | 1 |
| 3 | 8 |
| 4 | 55 |
| 5 | 248 |
| 6 | 820 |
| 7 | 2212 |
| 8 | 5163 |
| 9 | 10815 |
| 10 | 20833 |
| 11 | 37540 |
| 12 | 64067 |
| 13 | 104518 |
| 14 | 164150 |
| 15 | 249568 |
| 16 | 368935 |
| 17 | 532197 |
| 18 | 751323 |
| 19 | 1040560 |
| 20 | 1416703 |
| 21 | 1899380 |
| 22 | 2511352 |
| 23 | 3278828 |
| 24 | 4231795 |
| 25 | 5404363 |
| 26 | 6835125 |
| 27 | 8567532 |
| 28 | 10650283 |
| 29 | 13137730 |
| 30 | 16090298 |
| 31 | 19574920 |
| 32 | 23665487 |
| 33 | 28443313 |
| 34 | 33997615 |