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 | 2 |
| 10 | 2 |
| 11 | 4 |
| 12 | 12 |
| 13 | 22 |
| 14 | 58 |
| 15 | 158 |
| 16 | 448 |
| 17 | 1342 |
| 18 | 4199 |
| 19 | 13384 |
| 20 | 43708 |
| 21 | 144810 |
| 22 | 485704 |
| 23 | 1645576 |
| 24 | 5623571 |
| 25 | 19358410 |
| 26 | 67078828 |
| 27 | 233800162 |
| 28 | 819267086 |
| 29 | 2884908430 |
| 30 | 10204782956 |
| 31 | 36249143676 |
| 32 | 129267865144 |
| 33 | 462669746182 |
| 34 | 1661652306539 |
| 35 | 5986979643542 |