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 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 1 |
| 5 | 5 |
| 6 | 7 |
| 7 | 20 |
| 8 | 37 |
| 9 | 81 |
| 10 | 173 |
| 11 | 344 |
| 12 | 736 |
| 13 | 1461 |
| 14 | 3065 |
| 15 | 6208 |
| 16 | 12643 |
| 17 | 25662 |
| 18 | 52014 |
| 19 | 105487 |
| 20 | 212566 |
| 21 | 430007 |
| 22 | 865650 |
| 23 | 1744136 |
| 24 | 3508335 |
| 25 | 7053390 |
| 26 | 14167804 |
| 27 | 28441899 |
| 28 | 57065447 |
| 29 | 114418462 |
| 30 | 229341261 |
| 31 | 459442819 |
| 32 | 920097130 |
| 33 | 1841946718 |
| 34 | 3686197728 |