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 | 1 |
| 2 | 11 |
| 3 | 31 |
| 4 | 53 |
| 5 | 331 |
| 6 | 377 |
| 7 | 983 |
| 8 | 1499 |
| 9 | 2609 |
| 10 | 3329 |
| 11 | 6637 |
| 12 | 6997 |
| 13 | 19937 |
| 14 | 34987 |
| 15 | 157961 |
| 16 | 173699 |
| 17 | 256661 |
| 18 | 1349923 |
| 19 | 1616359 |
| 20 | 1993333 |
| 21 | 2199833 |
| 22 | 5794969 |
| 23 | 6906869 |
| 24 | 12204431 |
| 25 | 14223073 |
| 26 | 20666551 |
| 27 | 168499997 |
| 28 | 4819002127 |
| 29 | 7331752277 |
| 30 | 8259275501 |
| 31 | 27017515331 |
| 32 | 27581017543 |