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 | 29 |
| 2 | 239 |
| 3 | 1163 |
| 4 | 4166 |
| 5 | 12174 |
| 6 | 30738 |
| 7 | 69498 |
| 8 | 144111 |
| 9 | 278707 |
| 10 | 508937 |
| 11 | 885677 |
| 12 | 1479452 |
| 13 | 2385644 |
| 14 | 3730548 |
| 15 | 5678340 |
| 16 | 8439021 |
| 17 | 12277401 |
| 18 | 17523187 |
| 19 | 24582239 |
| 20 | 33949058 |
| 21 | 46220570 |
| 22 | 62111270 |
| 23 | 82469790 |
| 24 | 108296955 |
| 25 | 140765391 |
| 26 | 181240749 |
| 27 | 231304609 |