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 | 2 |
| 3 | 5 |
| 4 | 12 |
| 5 | 32 |
| 6 | 94 |
| 7 | 289 |
| 8 | 910 |
| 9 | 2934 |
| 10 | 9686 |
| 11 | 32540 |
| 12 | 110780 |
| 13 | 381676 |
| 14 | 1328980 |
| 15 | 4669367 |
| 16 | 16535154 |
| 17 | 58965214 |
| 18 | 211591218 |
| 19 | 763535450 |
| 20 | 2769176514 |
| 21 | 10089240974 |
| 22 | 36912710568 |
| 23 | 135565151486 |
| 24 | 499619269774 |
| 25 | 1847267563742 |
| 26 | 6850369296298 |