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) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 8 |
| 5 | 25 |
| 6 | 68 |
| 7 | 163 |
| 8 | 357 |
| 9 | 730 |
| 10 | 1417 |
| 11 | 2642 |
| 12 | 4774 |
| 13 | 8417 |
| 14 | 14556 |
| 15 | 24793 |
| 16 | 41729 |
| 17 | 69582 |
| 18 | 115187 |
| 19 | 189614 |
| 20 | 310786 |
| 21 | 507715 |
| 22 | 827356 |
| 23 | 1345697 |
| 24 | 2185703 |
| 25 | 3546350 |
| 26 | 5749603 |
| 27 | 9316428 |
| 28 | 15089782 |
| 29 | 24433615 |
| 30 | 39554862 |
| 31 | 64024437 |
| 32 | 103620219 |
| 33 | 167691032 |