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 | 1 |
| 4 | 2 |
| 5 | 3 |
| 6 | 4 |
| 7 | 6 |
| 8 | 9 |
| 9 | 15 |
| 10 | 25 |
| 11 | 41 |
| 12 | 68 |
| 13 | 117 |
| 14 | 200 |
| 15 | 347 |
| 16 | 613 |
| 17 | 1097 |
| 18 | 1975 |
| 19 | 3601 |
| 20 | 6621 |
| 21 | 12221 |
| 22 | 22814 |
| 23 | 42891 |
| 24 | 81443 |
| 25 | 156560 |
| 26 | 302701 |
| 27 | 586897 |
| 28 | 1144127 |
| 29 | 2236326 |
| 30 | 4393717 |
| 31 | 8777595 |
| 32 | 17613387 |
| 33 | 35570395 |
| 34 | 71983616 |
| 35 | 147125801 |
| 36 | 301280666 |
| 37 | 620399178 |
| 38 | 1284393250 |