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) |
|---|---|
| 7 | 1 |
| 8 | 9 |
| 9 | 82 |
| 10 | 701 |
| 11 | 5897 |
| 12 | 49854 |
| 13 | 427597 |
| 14 | 3740609 |
| 15 | 33479542 |
| 16 | 307119477 |
| 17 | 2890138160 |
| 18 | 27911144971 |
| 19 | 276632735047 |
| 20 | 2813333368854 |
| 21 | 29349063282197 |
| 22 | 313940448544057 |
| 23 | 3441759044602385 |
| 24 | 38652680805862224 |
| 25 | 444450158120668786 |
| 26 | 5229815283321976222 |
| 27 | 62942722623990478840 |