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) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 6 |
| 6 | 8 |
| 7 | 16 |
| 8 | 23 |
| 9 | 40 |
| 10 | 62 |
| 11 | 110 |
| 12 | 169 |
| 13 | 302 |
| 14 | 492 |
| 15 | 856 |
| 16 | 1454 |
| 17 | 2572 |
| 18 | 4428 |
| 19 | 7914 |
| 20 | 13935 |
| 21 | 25036 |
| 22 | 44842 |
| 23 | 81298 |
| 24 | 147149 |
| 25 | 268952 |
| 26 | 491746 |
| 27 | 904594 |
| 28 | 1667091 |
| 29 | 3085950 |
| 30 | 5723367 |
| 31 | 10652544 |
| 32 | 19865887 |
| 33 | 37150314 |
| 34 | 69608939 |
| 35 | 130723184 |
| 36 | 245935633 |
| 37 | 463590444 |
| 38 | 875306913 |
| 39 | 1655451592 |
| 40 | 3135613649 |
| 41 | 5948011978 |
| 42 | 11298215516 |