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) |
|---|---|
| 6 | 0 |
| 7 | 42 |
| 8 | 330 |
| 9 | 1485 |
| 10 | 5005 |
| 11 | 14014 |
| 12 | 34398 |
| 13 | 76440 |
| 14 | 157080 |
| 15 | 302940 |
| 16 | 554268 |
| 17 | 969969 |
| 18 | 1633905 |
| 19 | 2662660 |
| 20 | 4214980 |
| 21 | 6503112 |
| 22 | 9806280 |
| 23 | 14486550 |
| 24 | 21007350 |
| 25 | 29954925 |
| 26 | 42063021 |
| 27 | 58241106 |
| 28 | 79606450 |
| 29 | 107520400 |
| 30 | 143629200 |
| 31 | 189909720 |
| 32 | 248720472 |
| 33 | 322858305 |
| 34 | 415621185 |
| 35 | 530877480 |