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 | 6 |
| 9 | 37 |
| 10 | 195 |
| 11 | 975 |
| 12 | 4622 |
| 13 | 21128 |
| 14 | 94109 |
| 15 | 410820 |
| 16 | 1766591 |
| 17 | 7506179 |
| 18 | 31596240 |
| 19 | 131991619 |
| 20 | 547992183 |
| 21 | 2263477612 |
| 22 | 9309386178 |
| 23 | 38150082057 |
| 24 | 155859235424 |
| 25 | 635067478628 |
| 26 | 2581737704039 |