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 | 8 |
| 4 | 33 |
| 5 | 257 |
| 6 | 2262 |
| 7 | 30216 |
| 8 | 652931 |
| 9 | 18446157 |
| 10 | 797627174 |
| 11 | 48788464441 |
| 12 | 4420985966927 |
| 13 | 579498900792438 |
| 14 | 110425750437014304 |
| 15 | 30435339544089493297 |