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 | 0 |
| 3 | 1 |
| 4 | 1 |
| 5 | 2 |
| 6 | 3 |
| 7 | 6 |
| 8 | 9 |
| 9 | 16 |
| 10 | 26 |
| 11 | 45 |
| 12 | 72 |
| 13 | 124 |
| 14 | 201 |
| 15 | 341 |
| 16 | 561 |
| 17 | 947 |
| 18 | 1571 |
| 19 | 2651 |
| 20 | 4434 |
| 21 | 7496 |
| 22 | 12631 |
| 23 | 21423 |
| 24 | 36332 |
| 25 | 61910 |
| 26 | 105641 |
| 27 | 180924 |
| 28 | 310548 |
| 29 | 534713 |
| 30 | 923047 |