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 | 61 |
| 3 | 661 |
| 4 | 8953 |
| 5 | 152917 |
| 6 | 3334921 |
| 7 | 94354981 |
| 8 | 3528929353 |
| 9 | 177999003157 |
| 10 | 12340001650921 |
| 11 | 1194005625114661 |
| 12 | 162936187792764073 |
| 13 | 31536761103831315157 |
| 14 | 8677703806537883683081 |
| 15 | 3395880602480076153665701 |
| 16 | 1889190751946097573211698313 |