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) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 60 |
| 4 | 375 |
| 5 | 1392 |
| 6 | 4020 |
| 7 | 9960 |
| 8 | 22200 |
| 9 | 45730 |
| 10 | 88543 |
| 11 | 163000 |
| 12 | 287650 |
| 13 | 489610 |
| 14 | 807625 |
| 15 | 1295944 |
| 16 | 2029165 |
| 17 | 3108220 |
| 18 | 4667690 |
| 19 | 6884660 |
| 20 | 9989345 |
| 21 | 14277740 |
| 22 | 20126570 |
| 23 | 28010840 |
| 24 | 38524310 |
| 25 | 52403246 |
| 26 | 70553825 |
| 27 | 94083600 |
| 28 | 124337460 |
| 29 | 162938550 |
| 30 | 211834647 |
| 31 | 273350520 |
| 32 | 350246835 |