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 | 3 |
| 2 | 12 |
| 3 | 62 |
| 4 | 402 |
| 5 | 3162 |
| 6 | 29308 |
| 7 | 312975 |
| 8 | 3784365 |
| 9 | 51110995 |
| 10 | 762628152 |
| 11 | 12458953182 |
| 12 | 221186147507 |
| 13 | 4240110073077 |
| 14 | 87290431614432 |