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 | 318 |
| 1 | 1071 |
| 2 | 5040 |
| 3 | 5985 |
| 4 | 10710 |
| 5 | 20400 |
| 6 | 24225 |
| 7 | 43350 |
| 8 | 81600 |
| 9 | 85425 |
| 10 | 165750 |
| 11 | 327360 |
| 12 | 342705 |
| 13 | 664950 |
| 14 | 1309440 |
| 15 | 1324785 |
| 16 | 2629110 |
| 17 | 5241600 |
| 18 | 5303025 |
| 19 | 10524150 |
| 20 | 20966400 |
| 21 | 21027825 |
| 22 | 41973750 |
| 23 | 83880960 |
| 24 | 84126705 |
| 25 | 167925750 |
| 26 | 335523840 |