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 | 6 |
| 2 | 27 |
| 3 | 160 |
| 4 | 1169 |
| 5 | 12980 |
| 6 | 168909 |
| 7 | 2871742 |
| 8 | 54563459 |
| 9 | 1254960086 |
| 10 | 36393843335 |
| 11 | 1128209144346 |
| 12 | 41743738342171 |
| 13 | 1711493272030692 |
| 14 | 73594210697321605 |
| 15 | 3458927902774117644 |
| 16 | 183323178847028237941 |
| 17 | 10816067551974666042000 |