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 | 6 |
| 4 | 34 |
| 5 | 166 |
| 6 | 991 |
| 7 | 5931 |
| 8 | 37196 |
| 9 | 235456 |
| 10 | 1514618 |
| 11 | 9826177 |
| 12 | 64284947 |
| 13 | 423241426 |
| 14 | 2802300793 |
| 15 | 18642694440 |
| 16 | 124544085550 |
| 17 | 835091956750 |