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) |
|---|---|
| 0 | 1 |
| 1 | 10 |
| 2 | 54 |
| 3 | 210 |
| 4 | 659 |
| 5 | 1772 |
| 6 | 4235 |
| 7 | 9218 |
| 8 | 18590 |
| 9 | 35178 |
| 10 | 63063 |
| 11 | 107900 |
| 12 | 177243 |
| 13 | 280850 |
| 14 | 430939 |
| 15 | 642364 |
| 16 | 932680 |
| 17 | 1322068 |
| 18 | 1833095 |
| 19 | 2490290 |
| 20 | 3319525 |
| 21 | 4347200 |
| 22 | 5599243 |
| 23 | 7099950 |
| 24 | 8870703 |
| 25 | 10928616 |
| 26 | 13285169 |
| 27 | 15944898 |
| 28 | 18904214 |
| 29 | 22150426 |
| 30 | 25661040 |
| 31 | 29403398 |
| 32 | 33334708 |
| 33 | 37402498 |