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 | 720 |
| 2 | 1920 |
| 3 | 5580 |
| 4 | 14370 |
| 5 | 17160 |
| 6 | 21090 |
| 7 | 26040 |
| 8 | 28560 |
| 9 | 38280 |
| 10 | 43680 |
| 11 | 43890 |
| 12 | 50730 |
| 13 | 60090 |
| 14 | 77850 |
| 15 | 100800 |
| 16 | 104760 |
| 17 | 120060 |
| 18 | 125190 |
| 19 | 155100 |
| 20 | 167850 |
| 21 | 171780 |
| 22 | 193260 |
| 23 | 202470 |
| 24 | 206460 |
| 25 | 211860 |
| 26 | 217830 |
| 27 | 221880 |
| 28 | 224070 |
| 29 | 249900 |
| 30 | 249990 |
| 31 | 252420 |
| 32 | 261960 |