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 | 16383 |
| 2 | 4766585 |
| 3 | 263652487 |
| 4 | 5835080169 |
| 5 | 72260648471 |
| 6 | 599858908753 |
| 7 | 3719823438255 |
| 8 | 18478745943857 |
| 9 | 77123207545039 |
| 10 | 279749833583241 |
| 11 | 904168630965623 |
| 12 | 2653457921150425 |
| 13 | 7174630439858727 |
| 14 | 18080919199832609 |
| 15 | 42864668012537311 |
| 16 | 96320232521472993 |
| 17 | 206435541022680095 |