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 | 0 |
| 2 | 441 |
| 3 | 35623 |
| 4 | 1561238 |
| 5 | 59287158 |
| 6 | 2165511047 |
| 7 | 78259307721 |
| 8 | 2820153607740 |
| 9 | 101551366735840 |
| 10 | 3656082204395957 |
| 11 | 131621033827371963 |
| 12 | 4738375497166097906 |
| 13 | 170581677602043334746 |
| 14 | 6140941779058210902771 |
| 15 | 221073915991189916489149 |
| 16 | 7958661078139728516094136 |