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 | 381 |
| 3 | 4617 |
| 4 | 65363 |
| 5 | 2748026 |
| 6 | 67372651 |
| 7 | 1610981344 |
| 8 | 45496070039 |
| 9 | 1204223924807 |
| 10 | 31395434922611 |
| 11 | 839621841413395 |
| 12 | 22297914534222936 |
| 13 | 589873752024831225 |
| 14 | 15663501392099069812 |
| 15 | 415682851416335706284 |
| 16 | 11022783242886075047889 |