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 | 7 |
| 3 | 93 |
| 4 | 1440 |
| 5 | 25225 |
| 6 | 476427 |
| 7 | 9501737 |
| 8 | 197197440 |
| 9 | 4219878330 |
| 10 | 92516600575 |
| 11 | 2068590840349 |
| 12 | 47010163129632 |
| 13 | 1083052539395723 |
| 14 | 25244912684662559 |
| 15 | 594388664281931925 |
| 16 | 14118181920797391360 |
| 17 | 337939791145403719897 |