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 | 3 |
| 3 | 4 |
| 4 | 13 |
| 5 | 14 |
| 6 | 31 |
| 7 | 263 |
| 8 | 264 |
| 9 | 3114 |
| 10 | 4119 |
| 11 | 24737 |
| 12 | 81619 |
| 13 | 834386 |
| 14 | 1382737 |
| 15 | 9959514 |
| 16 | 10775719 |
| 17 | 341608987 |
| 18 | 836460469 |
| 19 | 998053937 |
| 20 | 24737858031 |
| 21 | 40201507014 |
| 22 | 99599046013 |
| 23 | 2488372283063 |
| 24 | 8361615872313 |