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 | 15 |
| 3 | 56 |
| 4 | 102 |
| 5 | 228 |
| 6 | 234 |
| 7 | 384 |
| 8 | 408 |
| 9 | 510 |
| 10 | 864 |
| 11 | 936 |
| 12 | 1092 |
| 13 | 1140 |
| 14 | 1170 |
| 15 | 1920 |
| 16 | 2040 |
| 17 | 4320 |
| 18 | 4680 |
| 19 | 5460 |