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) |
|---|---|
| 6 | 1 |
| 7 | 14 |
| 8 | 107 |
| 9 | 593 |
| 10 | 2673 |
| 11 | 10429 |
| 12 | 36622 |
| 13 | 118885 |
| 14 | 363791 |
| 15 | 1064866 |
| 16 | 3015563 |
| 17 | 8334539 |
| 18 | 22634700 |
| 19 | 60713627 |
| 20 | 161467437 |
| 21 | 426957444 |
| 22 | 1124716630 |
| 23 | 2955628731 |
| 24 | 7755292673 |
| 25 | 20330279298 |
| 26 | 53265590236 |
| 27 | 139510843575 |
| 28 | 365331452729 |