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 | 97 |
| 3 | 1207 |
| 4 | 14017 |
| 5 | 157927 |
| 6 | 1755937 |
| 7 | 19409047 |
| 8 | 213968257 |
| 9 | 2355994567 |
| 10 | 25927658977 |
| 11 | 285262842487 |
| 12 | 3138184236097 |
| 13 | 34521491440807 |
| 14 | 379743730067617 |
| 15 | 4177217651837527 |
| 16 | 45949577275681537 |
| 17 | 505446265559840647 |