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 | 5 |
| 3 | 11 |
| 4 | 56 |
| 5 | 77 |
| 6 | 101 |
| 7 | 176 |
| 8 | 1958 |
| 9 | 4565 |
| 10 | 6842 |
| 11 | 26015 |
| 12 | 53174 |
| 13 | 124754 |
| 14 | 173525 |
| 15 | 526823 |
| 16 | 715220 |
| 17 | 966467 |
| 18 | 2012558 |
| 19 | 2323520 |
| 20 | 2679689 |
| 21 | 3554345 |
| 22 | 7089500 |
| 23 | 9289091 |
| 24 | 12132164 |
| 25 | 13848650 |
| 26 | 23338469 |
| 27 | 26543660 |
| 28 | 30167357 |
| 29 | 38887673 |
| 30 | 56634173 |