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) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 2 |
| 6 | 5 |
| 7 | 9 |
| 8 | 19 |
| 9 | 38 |
| 10 | 86 |
| 11 | 188 |
| 12 | 439 |
| 13 | 1026 |
| 14 | 2472 |
| 15 | 5997 |
| 16 | 14835 |
| 17 | 36964 |
| 18 | 93246 |
| 19 | 236922 |
| 20 | 607111 |
| 21 | 1565478 |
| 22 | 4062797 |
| 23 | 10599853 |
| 24 | 27797420 |
| 25 | 73224806 |
| 26 | 193709710 |
| 27 | 514406793 |
| 28 | 1370937140 |
| 29 | 3665714528 |
| 30 | 9831891555 |
| 31 | 26445886506 |
| 32 | 71325268179 |