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 | 22 |
| 2 | 484 |
| 3 | 4048 |
| 4 | 32393 |
| 5 | 287176 |
| 6 | 2405923 |
| 7 | 19685415 |
| 8 | 162644898 |
| 9 | 1341574108 |
| 10 | 11023853716 |
| 11 | 90632253233 |
| 12 | 745371866818 |
| 13 | 6127014511151 |
| 14 | 50361384430983 |
| 15 | 413990430367770 |
| 16 | 3403011557477728 |
| 17 | 27971925637911848 |
| 18 | 229926213789709519 |