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 | 1 |
| 3 | 10 |
| 4 | 111 |
| 5 | 1476 |
| 6 | 23255 |
| 7 | 425958 |
| 8 | 8915263 |
| 9 | 210156040 |
| 10 | 5513215599 |
| 11 | 159374246010 |
| 12 | 5034663700847 |
| 13 | 172583816090700 |
| 14 | 6380915666604583 |
| 15 | 253132868797656526 |
| 16 | 10725414213389814015 |
| 17 | 483431164831317069840 |