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 | 2 |
| 3 | 4 |
| 4 | 6 |
| 5 | 12 |
| 6 | 21 |
| 7 | 43 |
| 8 | 78 |
| 9 | 156 |
| 10 | 293 |
| 11 | 583 |
| 12 | 1118 |
| 13 | 2208 |
| 14 | 4277 |
| 15 | 8423 |
| 16 | 16422 |
| 17 | 32280 |
| 18 | 63117 |
| 19 | 123951 |
| 20 | 242782 |
| 21 | 476560 |
| 22 | 934181 |
| 23 | 1833255 |
| 24 | 3595254 |
| 25 | 7054600 |
| 26 | 13837949 |
| 27 | 27151135 |
| 28 | 53264270 |
| 29 | 104505920 |
| 30 | 205027797 |
| 31 | 402264599 |
| 32 | 789215654 |