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 | 64 |
| 2 | 1 |
| 3 | 117 |
| 4 | 65 |
| 5 | 196 |
| 6 | 1999 |
| 7 | 8781 |
| 8 | 104732 |
| 9 | 770376 |
| 10 | 7398173 |
| 11 | 75183520 |
| 12 | 712349998 |
| 13 | 7178506389 |
| 14 | 72042620797 |
| 15 | 721879978606 |
| 16 | 7250047119979 |
| 17 | 72777298549367 |
| 18 | 730558484014599 |
| 19 | 7332580130417856 |
| 20 | 73594615185044259 |
| 21 | 738663477116841069 |