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 | 5 |
| 3 | 13 |
| 4 | 47 |
| 5 | 59 |
| 6 | 109 |
| 7 | 241 |
| 8 | 335 |
| 9 | 1109 |
| 10 | 1373 |
| 11 | 1447 |
| 12 | 14893 |
| 13 | 37892 |
| 14 | 56543 |
| 15 | 185644 |
| 16 | 649603 |
| 17 | 838441 |
| 18 | 8840101 |
| 19 | 16935761 |
| 20 | 100604513 |
| 21 | 118373279 |
| 22 | 270704167 |
| 23 | 1355477231 |