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 | 2 |
| 2 | 12 |
| 3 | 27 |
| 4 | 77 |
| 5 | 162 |
| 6 | 452 |
| 7 | 947 |
| 8 | 2637 |
| 9 | 5522 |
| 10 | 15372 |
| 11 | 32187 |
| 12 | 89597 |
| 13 | 187602 |
| 14 | 522212 |
| 15 | 1093427 |
| 16 | 3043677 |
| 17 | 6372962 |
| 18 | 17739852 |
| 19 | 37144347 |
| 20 | 103395437 |
| 21 | 216493122 |
| 22 | 602632772 |
| 23 | 1261814387 |
| 24 | 3512401197 |
| 25 | 7354393202 |
| 26 | 20471774412 |
| 27 | 42864544827 |
| 28 | 119318245277 |
| 29 | 249832875762 |