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) |
|---|---|
| 0 | 1 |
| 1 | 13 |
| 2 | 191 |
| 3 | 457 |
| 4 | 1713 |
| 5 | 2899 |
| 6 | 6997 |
| 7 | 19769 |
| 8 | 26521 |
| 9 | 57313 |
| 10 | 89161 |
| 11 | 109327 |
| 12 | 159713 |
| 13 | 265617 |
| 14 | 417079 |
| 15 | 479641 |
| 16 | 709963 |
| 17 | 903981 |
| 18 | 1014697 |
| 19 | 1408369 |
| 20 | 1727987 |
| 21 | 2305689 |
| 22 | 3287713 |
| 23 | 3882401 |
| 24 | 4208317 |
| 25 | 4921263 |
| 26 | 5309929 |
| 27 | 6155857 |
| 28 | 9930313 |
| 29 | 11272171 |