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 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 6 |
| 6 | 14 |
| 7 | 32 |
| 8 | 79 |
| 9 | 198 |
| 10 | 522 |
| 11 | 1368 |
| 12 | 3716 |
| 13 | 9992 |
| 14 | 27612 |
| 15 | 75692 |
| 16 | 212045 |
| 17 | 589478 |
| 18 | 1668630 |
| 19 | 4690792 |
| 20 | 13387332 |
| 21 | 37980664 |
| 22 | 109098556 |
| 23 | 311717768 |
| 24 | 900846484 |
| 25 | 2589449032 |
| 26 | 7515759012 |
| 27 | 21720369476 |
| 28 | 63305262126 |
| 29 | 183726039404 |
| 30 | 537364221200 |
| 31 | 1565570459800 |
| 32 | 4592892152163 |