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 | 1 |
| 2 | 6 |
| 3 | 35 |
| 4 | 196 |
| 5 | 1093 |
| 6 | 6090 |
| 7 | 33991 |
| 8 | 190152 |
| 9 | 1066313 |
| 10 | 5993422 |
| 11 | 33759851 |
| 12 | 190538380 |
| 13 | 1077316493 |
| 14 | 6101144722 |
| 15 | 34603634063 |
| 16 | 196524445840 |
| 17 | 1117492252561 |
| 18 | 6361505951382 |
| 19 | 36251199646387 |
| 20 | 206773994830164 |
| 21 | 1180452564195797 |
| 22 | 6744529721551450 |
| 23 | 38563791929450071 |
| 24 | 220652949570236760 |