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 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 19380 |
| 5 | 285090 |
| 6 | 337536 |
| 7 | 448630 |
| 8 | 532390 |
| 9 | 534430 |
| 10 | 545140 |
| 11 | 547536 |
| 12 | 585106 |
| 13 | 602056 |
| 14 | 677076 |
| 15 | 876180 |
| 16 | 1007386 |
| 17 | 1030200 |
| 18 | 1331950 |
| 19 | 1462000 |
| 20 | 1736346 |
| 21 | 1878790 |
| 22 | 1883856 |
| 23 | 2071960 |
| 24 | 2194666 |
| 25 | 2240890 |
| 26 | 2763010 |
| 27 | 2824720 |
| 28 | 3018606 |
| 29 | 3114996 |