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 | 13 |
| 4 | 29 |
| 5 | 89 |
| 6 | 233 |
| 7 | 433 |
| 8 | 1597 |
| 9 | 2897 |
| 10 | 5741 |
| 11 | 7561 |
| 12 | 28657 |
| 13 | 33461 |
| 14 | 43261 |
| 15 | 96557 |
| 16 | 426389 |
| 17 | 514229 |
| 18 | 1686049 |
| 19 | 2922509 |
| 20 | 3276509 |
| 21 | 94418953 |
| 22 | 321534781 |
| 23 | 433494437 |
| 24 | 780291637 |
| 25 | 1405695061 |
| 26 | 2971215073 |
| 27 | 19577194573 |
| 28 | 25209506681 |
| 29 | 44208781349 |
| 30 | 44560482149 |
| 31 | 128367472469 |