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 | 0 |
| 8 | 1 |
| 9 | 1 |
| 10 | 2 |
| 11 | 2 |
| 12 | 9 |
| 13 | 11 |
| 14 | 37 |
| 15 | 79 |
| 16 | 249 |
| 17 | 671 |
| 18 | 2182 |
| 19 | 6692 |
| 20 | 22131 |
| 21 | 72405 |
| 22 | 243806 |
| 23 | 822788 |
| 24 | 2815119 |
| 25 | 9679205 |
| 26 | 33551192 |
| 27 | 116900081 |
| 28 | 409675567 |
| 29 | 1442454215 |
| 30 | 5102542680 |
| 31 | 18124571838 |
| 32 | 64634480340 |
| 33 | 231334873091 |
| 34 | 830828150081 |
| 35 | 2993489821771 |