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 | 11 |
| 2 | 342 |
| 3 | 9213 |
| 4 | 253880 |
| 5 | 6974078 |
| 6 | 191668283 |
| 7 | 5267252351 |
| 8 | 144751259054 |
| 9 | 3977955684680 |
| 10 | 109319496849249 |
| 11 | 3004244633718754 |
| 12 | 82560623863809043 |
| 13 | 2268875354470436757 |
| 14 | 62351701497747569760 |
| 15 | 1713507386797976483977 |
| 16 | 47089453761312228669727 |
| 17 | 1294080593187150583795074 |