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 | 13 |
| 2 | 37 |
| 3 | 277 |
| 4 | 613 |
| 5 | 12157 |
| 6 | 14557 |
| 7 | 23053 |
| 8 | 55213 |
| 9 | 81013 |
| 10 | 203317 |
| 11 | 331333 |
| 12 | 393853 |
| 13 | 824773 |
| 14 | 867253 |
| 15 | 1008037 |
| 16 | 2038573 |
| 17 | 3026053 |
| 18 | 3322213 |
| 19 | 5198197 |
| 20 | 5497237 |
| 21 | 5793517 |
| 22 | 5984053 |
| 23 | 9107173 |
| 24 | 17246413 |
| 25 | 20850757 |
| 26 | 20871853 |
| 27 | 21327997 |
| 28 | 25363573 |
| 29 | 25678573 |
| 30 | 27258613 |
| 31 | 29134597 |
| 32 | 30153037 |
| 33 | 33313333 |