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 | 2 |
| 2 | 12 |
| 3 | 18630 |
| 4 | 27000 |
| 5 | 443394 |
| 6 | 6242022 |
| 7 | 14412720 |
| 8 | 22315419 |
| 9 | 26744100 |
| 10 | 44630838 |
| 11 | 50496960 |
| 12 | 106034880 |
| 13 | 128710944 |
| 14 | 148536990 |
| 15 | 162907584 |
| 16 | 212072880 |
| 17 | 218470770 |
| 18 | 296259930 |
| 19 | 349444530 |
| 20 | 397253968 |
| 21 | 535267776 |
| 22 | 641250900 |
| 23 | 641418960 |
| 24 | 666274653 |
| 25 | 684165552 |
| 26 | 688208724 |
| 27 | 709639408 |