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 | 1 |
| 1 | 196 |
| 2 | 22638 |
| 3 | 2016840 |
| 4 | 153632787 |
| 5 | 10544644572 |
| 6 | 672413918176 |
| 7 | 40624783239040 |
| 8 | 2356312445219733 |
| 9 | 132435800821952628 |
| 10 | 7261903300743441714 |
| 11 | 390447849166013566200 |
| 12 | 20663998640254649395639 |