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 | 3 |
| 2 | 24 |
| 3 | 105 |
| 4 | 153 |
| 5 | 188 |
| 6 | 605 |
| 7 | 795 |
| 8 | 813 |
| 9 | 839 |
| 10 | 2135 |
| 11 | 2619 |
| 12 | 4053 |
| 13 | 8333 |
| 14 | 15519 |
| 15 | 16025 |
| 16 | 16505 |
| 17 | 30684 |
| 18 | 40700 |
| 19 | 43683 |
| 20 | 52233 |
| 21 | 142205 |
| 22 | 222345 |
| 23 | 225333 |
| 24 | 292839 |
| 25 | 322613 |
| 26 | 747219 |
| 27 | 781220 |