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) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 7 |
| 5 | 14 |
| 6 | 38 |
| 7 | 107 |
| 8 | 410 |
| 9 | 1897 |
| 10 | 12172 |
| 11 | 105071 |
| 12 | 1262180 |
| 13 | 20797002 |
| 14 | 467871369 |
| 15 | 14232552452 |
| 16 | 581460254001 |
| 17 | 31720840164950 |