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 | 2 |
| 2 | 4 |
| 3 | 7 |
| 4 | 15 |
| 5 | 27 |
| 6 | 58 |
| 7 | 106 |
| 8 | 227 |
| 9 | 419 |
| 10 | 894 |
| 11 | 1662 |
| 12 | 3534 |
| 13 | 6606 |
| 14 | 14004 |
| 15 | 26292 |
| 16 | 55587 |
| 17 | 104739 |
| 18 | 220918 |
| 19 | 417526 |
| 20 | 878810 |
| 21 | 1665242 |
| 22 | 3498444 |
| 23 | 6644172 |
| 24 | 13934990 |
| 25 | 26517902 |
| 26 | 55531948 |
| 27 | 105863596 |
| 28 | 221384892 |
| 29 | 422711484 |
| 30 | 882865128 |
| 31 | 1688171496 |
| 32 | 3521765667 |
| 33 | 6742991139 |