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) |
|---|---|
| 8 | 9 |
| 9 | 100 |
| 10 | 605 |
| 11 | 2640 |
| 12 | 9295 |
| 13 | 28028 |
| 14 | 75075 |
| 15 | 183040 |
| 16 | 413270 |
| 17 | 875160 |
| 18 | 1755182 |
| 19 | 3359200 |
| 20 | 6172530 |
| 21 | 10943240 |
| 22 | 18795370 |
| 23 | 31380096 |
| 24 | 51074375 |
| 25 | 81238300 |
| 26 | 126544275 |
| 27 | 193393200 |
| 28 | 290435145 |
| 29 | 429214500 |
| 30 | 624962325 |
| 31 | 897561600 |
| 32 | 1272714300 |
| 33 | 1783342704 |
| 34 | 2471261100 |
| 35 | 3389158080 |