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 | 6 |
| 3 | 41 |
| 4 | 309 |
| 5 | 24722 |
| 6 | 2060169 |
| 7 | 176585917 |
| 8 | 15451267740 |
| 9 | 1373446021336 |
| 10 | 123610141920243 |
| 11 | 11237285629113003 |
| 12 | 1030084516002025278 |
| 13 | 95084724554033102588 |
| 14 | 8829295851445930954604 |
| 15 | 824067612801620222429711 |