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 | 7 |
| 2 | 79 |
| 3 | 1159 |
| 4 | 19303 |
| 5 | 345895 |
| 6 | 6504487 |
| 7 | 126597031 |
| 8 | 2528447911 |
| 9 | 51526205863 |
| 10 | 1067116097959 |
| 11 | 22394503831975 |
| 12 | 475191351108007 |
| 13 | 10177980935594407 |
| 14 | 219758235960500647 |
| 15 | 4778128782752211367 |
| 16 | 104526001924311998887 |