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 | 1 |
| 2 | 33 |
| 3 | 245 |
| 4 | 1027 |
| 5 | 3129 |
| 6 | 7781 |
| 7 | 16813 |
| 8 | 32775 |
| 9 | 59057 |
| 10 | 100009 |
| 11 | 161061 |
| 12 | 248843 |
| 13 | 371305 |
| 14 | 537837 |
| 15 | 759389 |
| 16 | 1048591 |
| 17 | 1419873 |
| 18 | 1889585 |
| 19 | 2476117 |
| 20 | 3200019 |
| 21 | 4084121 |
| 22 | 5153653 |
| 23 | 6436365 |
| 24 | 7962647 |
| 25 | 9765649 |
| 26 | 11881401 |
| 27 | 14348933 |
| 28 | 17210395 |
| 29 | 20511177 |
| 30 | 24300029 |
| 31 | 28629181 |
| 32 | 33554463 |