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 | 6 |
| 3 | 34 |
| 4 | 54 |
| 5 | 1090 |
| 6 | 1126 |
| 7 | 1734 |
| 8 | 2790 |
| 9 | 2866 |
| 10 | 3154 |
| 11 | 4374 |
| 12 | 1161586 |
| 13 | 1170726 |
| 14 | 1184866 |
| 15 | 1187014 |
| 16 | 1240390 |
| 17 | 1249890 |
| 18 | 1264534 |
| 19 | 1266754 |
| 20 | 1782150 |
| 21 | 1842306 |
| 22 | 1901814 |
| 23 | 2962854 |
| 24 | 2978434 |
| 25 | 3001590 |
| 26 | 3005026 |
| 27 | 3249826 |
| 28 | 3298390 |