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 | 0 |
| 1 | 3 |
| 2 | 20 |
| 3 | 87 |
| 4 | 264 |
| 5 | 635 |
| 6 | 1308 |
| 7 | 2415 |
| 8 | 4112 |
| 9 | 6579 |
| 10 | 10020 |
| 11 | 14663 |
| 12 | 20760 |
| 13 | 28587 |
| 14 | 38444 |
| 15 | 50655 |
| 16 | 65568 |
| 17 | 83555 |
| 18 | 105012 |
| 19 | 130359 |
| 20 | 160040 |
| 21 | 194523 |
| 22 | 234300 |
| 23 | 279887 |
| 24 | 331824 |
| 25 | 390675 |
| 26 | 457028 |
| 27 | 531495 |
| 28 | 614712 |
| 29 | 707339 |
| 30 | 810060 |
| 31 | 923583 |
| 32 | 1048640 |