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 | 1 |
| 2 | 5 |
| 3 | 18 |
| 4 | 55 |
| 5 | 143 |
| 6 | 333 |
| 7 | 715 |
| 8 | 1430 |
| 9 | 2700 |
| 10 | 4862 |
| 11 | 8398 |
| 12 | 13995 |
| 13 | 22610 |
| 14 | 35530 |
| 15 | 54477 |
| 16 | 81719 |
| 17 | 120175 |
| 18 | 173583 |
| 19 | 246675 |
| 20 | 345345 |
| 21 | 476901 |
| 22 | 650325 |
| 23 | 876525 |
| 24 | 1168695 |
| 25 | 1542684 |
| 26 | 2017356 |
| 27 | 2615085 |
| 28 | 3362260 |
| 29 | 4289780 |
| 30 | 5433714 |
| 31 | 6835972 |
| 32 | 8544965 |
| 33 | 10616463 |
| 34 | 13114465 |
| 35 | 16112057 |