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 | 4 |
| 2 | 6 |
| 3 | 180 |
| 4 | 3390 |
| 5 | 18060 |
| 6 | 19380 |
| 7 | 34500 |
| 8 | 92220 |
| 9 | 92640 |
| 10 | 96180 |
| 11 | 114660 |
| 12 | 127680 |
| 13 | 133980 |
| 14 | 140760 |
| 15 | 159630 |
| 16 | 161880 |
| 17 | 172170 |
| 18 | 207480 |
| 19 | 254280 |
| 20 | 255840 |
| 21 | 263820 |
| 22 | 296910 |
| 23 | 309780 |
| 24 | 378570 |
| 25 | 380880 |
| 26 | 397590 |
| 27 | 408690 |
| 28 | 422880 |
| 29 | 432660 |
| 30 | 440550 |
| 31 | 511170 |
| 32 | 540390 |
| 33 | 572940 |