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 | 12 |
| 2 | 84 |
| 3 | 120 |
| 4 | 588 |
| 5 | 840 |
| 6 | 4116 |
| 7 | 5880 |
| 8 | 28812 |
| 9 | 41160 |
| 10 | 201684 |
| 11 | 288120 |
| 12 | 1411788 |
| 13 | 2016840 |
| 14 | 9882516 |
| 15 | 14117880 |
| 16 | 69177612 |
| 17 | 98825160 |
| 18 | 484243284 |
| 19 | 691776120 |
| 20 | 3389702988 |
| 21 | 4842432840 |
| 22 | 23727920916 |
| 23 | 33897029880 |
| 24 | 166095446412 |
| 25 | 237279209160 |
| 26 | 1162668124884 |
| 27 | 1660954464120 |