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 | 17 |
| 3 | 337 |
| 4 | 6689 |
| 5 | 132769 |
| 6 | 2635313 |
| 7 | 52307953 |
| 8 | 1038253121 |
| 9 | 20608138561 |
| 10 | 409048011857 |
| 11 | 8119135821457 |
| 12 | 161155572393569 |
| 13 | 3198754040407009 |
| 14 | 63491614090959473 |
| 15 | 1260236019697968433 |
| 16 | 25014245551686490241 |