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 | 1 |
| 9 | 3 |
| 10 | 6 |
| 11 | 13 |
| 12 | 26 |
| 13 | 56 |
| 14 | 115 |
| 15 | 246 |
| 16 | 530 |
| 17 | 1166 |
| 18 | 2613 |
| 19 | 5982 |
| 20 | 13940 |
| 21 | 33073 |
| 22 | 79760 |
| 23 | 195109 |
| 24 | 483615 |
| 25 | 1212485 |
| 26 | 3071358 |
| 27 | 7850690 |
| 28 | 20231286 |
| 29 | 52513864 |
| 30 | 137202595 |
| 31 | 360578812 |
| 32 | 952705531 |
| 33 | 2529454122 |
| 34 | 6745724961 |
| 35 | 18063628118 |
| 36 | 48553319703 |
| 37 | 130962595786 |
| 38 | 354390168855 |