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 | 1 |
| 2 | 6 |
| 3 | 21 |
| 4 | 56 |
| 5 | 127 |
| 6 | 259 |
| 7 | 490 |
| 8 | 876 |
| 9 | 1498 |
| 10 | 2472 |
| 11 | 3963 |
| 12 | 6204 |
| 13 | 9522 |
| 14 | 14374 |
| 15 | 21397 |
| 16 | 31477 |
| 17 | 45844 |
| 18 | 66203 |
| 19 | 94915 |
| 20 | 135247 |
| 21 | 191717 |
| 22 | 270570 |
| 23 | 380435 |
| 24 | 533232 |
| 25 | 745424 |
| 26 | 1039745 |
| 27 | 1447585 |
| 28 | 2012282 |
| 29 | 2793666 |
| 30 | 3874331 |
| 31 | 5368292 |
| 32 | 7432934 |
| 33 | 10285505 |
| 34 | 14225881 |
| 35 | 19667988 |
| 36 | 27183173 |