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 | 4 |
| 3 | 19 |
| 4 | 106 |
| 5 | 709 |
| 6 | 5356 |
| 7 | 44558 |
| 8 | 397146 |
| 9 | 3716039 |
| 10 | 35967272 |
| 11 | 356784008 |
| 12 | 3605014966 |
| 13 | 36955965852 |
| 14 | 383320824698 |