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 | 0 |
| 1 | 1 |
| 2 | 12 |
| 3 | 169 |
| 4 | 2352 |
| 5 | 32761 |
| 6 | 456300 |
| 7 | 6355441 |
| 8 | 88519872 |
| 9 | 1232922769 |
| 10 | 17172398892 |
| 11 | 239180661721 |
| 12 | 3331356865200 |
| 13 | 46399815451081 |
| 14 | 646266059449932 |
| 15 | 9001325016847969 |
| 16 | 125372284176421632 |
| 17 | 1746210653453054881 |