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) |
|---|---|
| 8 | 1 |
| 9 | 16 |
| 10 | 130 |
| 11 | 748 |
| 12 | 3459 |
| 13 | 13612 |
| 14 | 47141 |
| 15 | 147116 |
| 16 | 421040 |
| 17 | 1119827 |
| 18 | 2796446 |
| 19 | 6610818 |
| 20 | 14893276 |
| 21 | 32150509 |
| 22 | 66807075 |
| 23 | 134139807 |
| 24 | 261101457 |
| 25 | 494074770 |
| 26 | 911085320 |
| 27 | 1640685080 |
| 28 | 2890653798 |
| 29 | 4990940719 |
| 30 | 8456978339 |
| 31 | 14081784408 |
| 32 | 23068258050 |