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 | 2 |
| 2 | 11 |
| 3 | 46 |
| 4 | 824 |
| 5 | 27178 |
| 6 | 1020762 |
| 7 | 102044420 |
| 8 | 20297233254 |
| 9 | 6218446852487 |
| 10 | 3906297811846469 |
| 11 | 4829512709969500388 |
| 12 | 10588146860457194561192 |
| 13 | 44163637535605999104548698 |